I confirm that the behavior is this one
- start from an empty user dir
- launch app, everything is fine
- exit app
- netigso stores a pile of data in var cache etc
- relaunch app
- java.io.IOException: Cannot start org.apache.commons.io state remains INSTALLED after start()

PFA full stdout of second launch here:
-------------------------------------------------------------------------------

>Log Session: Monday, February 20, 2012 1:16:02 PM CET

>System Info:

  Product Version         = SQLBrowser 837

  Operating System        = Windows XP version 5.1 running on x86

  Java; VM; Vendor        = 1.6.0_18; Java HotSpot(TM) Server VM 16.0-b13; Sun Microsystems Inc.

  Runtime                 = Java(TM) SE Runtime Environment 1.6.0_18-b07

  Java Home               = C:\Program Files\Java\jdk1.6.0_18\jre

  System Locale; Encoding = en_GB (sqlbrowser); Cp1252

  Home Directory          = C:\Documents and Settings\U444803

  Current Directory       = C:\Temp\SQLBrowserALPHA

  User Directory          = C:\temp\SqlbrowserUserDir

  Cache Directory         = C:\temp\SqlbrowserUserDir\var\cache

  Installation            = C:\temp\SQLBrowserALPHA\sqlbrowser

                            C:\temp\SQLBrowserALPHA\ide

                            C:\Temp\SQLBrowserALPHA\platform

  Boot & Ext. Classpath   = C:\Program Files\Java\jdk1.6.0_18\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0_18\jre\classes;C:\Program Files\Java\jdk1.6.0_18\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.6.0_18\jre\lib\ext\sunpkcs11.jar

  Application Classpath   = C:\Temp\SQLBrowserALPHA\platform\lib\boot.jar;C:\Temp\SQLBrowserALPHA\platform\lib\org-openide-modules.jar;C:\Temp\SQLBrowserALPHA\platform\lib\org-openide-util-lookup.jar;C:\Temp\SQLBrowserALPHA\platform\lib\org-openide-util.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\boot_ja.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\boot_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\boot_ru.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\boot_zh_CN.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-modules_ja.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-modules_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-modules_ru.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-modules_zh_CN.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util-lookup_ja.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util-lookup_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util-lookup_ru.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util-lookup_zh_CN.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util_ja.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util_ru.jar;C:\Temp\SQLBrowserALPHA\platform\lib\locale\org-openide-util_zh_CN.jar;C:\Program Files\Java\jdk1.6.0_18\lib\dt.jar;C:\Program Files\Java\jdk1.6.0_18\lib\tools.jar

  Startup Classpath       = C:\Temp\SQLBrowserALPHA\platform\core\core.jar;C:\Temp\SQLBrowserALPHA\platform\core\org-openide-filesystems.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\core_ja.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\core_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\core_ru.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\core_zh_CN.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\org-openide-filesystems_ja.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\org-openide-filesystems_pt_BR.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\org-openide-filesystems_ru.jar;C:\Temp\SQLBrowserALPHA\platform\core\locale\org-openide-filesystems_zh_CN.jar;C:\Temp\SQLBrowserALPHA\sqlbrowser\core\locale\core_sqlbrowser.jar

-------------------------------------------------------------------------------

INFO [org.netbeans.core.startup.ModuleList]

java.io.IOException: Cannot start org.apache.commons.io state remains INSTALLED after start()

                at org.netbeans.core.netigso.Netigso.createLoader(Netigso.java:295)

                at org.netbeans.NetigsoModule.start(NetigsoModule.java:150)

                at org.netbeans.NetigsoFramework.delayedInit(NetigsoFramework.java:212)

Caused: org.netbeans.InvalidException: Netigso: C:\temp\SQLBrowserALPHA\ide\modules\org-apache-commons-io.jar: Cannot start org.apache.commons.io state remains INSTALLED after start()

Caused: org.netbeans.InvalidException: Netigso: C:\temp\SQLBrowserALPHA\ide\modules\com-jcraft-jsch.jar: Cannot start com.jcraft.jsch state remains INSTALLED after start()

                at org.netbeans.NetigsoFramework.delayedInit(NetigsoFramework.java:215)

                at org.netbeans.NetigsoFramework.turnOn(NetigsoFramework.java:185)

                at org.netbeans.ModuleManager.enable(ModuleManager.java:1071)

[catch] at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:340)

                at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:276)

                at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:294)

                at org.netbeans.core.startup.Main.getModuleSystem(Main.java:172)

                at org.netbeans.core.startup.Main.start(Main.java:308)

                at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)

                at java.lang.Thread.run(Thread.java:619)

WARNING [org.netbeans.core.modules]

java.lang.IllegalStateException: Module Netigso: C:\temp\SQLBrowserALPHA\ide\modules\com-jcraft-jsch.jar could not be installed but had no problems

                at org.netbeans.core.startup.NbProblemDisplayer.problemMessagesForModules(NbProblemDisplayer.java:231)

                at org.netbeans.core.startup.NbEvents.logged(NbEvents.java:188)

[catch] at org.netbeans.Events.log(Events.java:166)

                at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:346)

                at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:276)

                at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:294)

                at org.netbeans.core.startup.Main.getModuleSystem(Main.java:172)

                at org.netbeans.core.startup.Main.start(Main.java:308)

                at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:123)

                at java.lang.Thread.run(Thread.java:619)

WARNING [org.openide.filesystems.Ordering]: Not all children in Services/MIMEResolver/ marked with the position attribute: [com-sqlbrowser-module-sqlsupport-dataobject-SQLMimeResolver.instance], but some are: [instance-mime-resolver.xml, org-netbeans-modules-image-mime-resolver.xml, org-netbeans-modules-properties-mime-resolver.xml, Manifest.xml, plain-text-resolver.xml, cssResolver.xml, Diff.xml, javascript.xml, YAML.xml, html.xml, org-netbeans-modules-editor-settings-storage-mime-resolver.xml, org-netbeans-modules-url-mime-resolver.xml, org-netbeans-modules-pdf-mime-resolver.xml, xslt-mime-resolver.xml, org-netbeans-modules-editor-codetemplates-mime-resolver.xml, org-netbeans-modules-editor-macros-mime-resolver.xml, org-netbeans-modules-xml-services-XMLMIMEResolver.xml, org-netbeans-modules-xml-services-DTDMIMEResolver.xml, org-netbeans-modules-xml-services-ENTMIMEResolver.xml, FreemarkerResolver.xml, org-netbeans-modules-xml-services-FallbackXMLResolver.xml]

WARNING [org.openide.filesystems.Ordering]: Not all children in Services/MIMEResolver/ marked with the position attribute: [com-sqlbrowser-module-sqlsupport-dataobject-SQLMimeResolver.instance], but some are: [instance-mime-resolver.xml, org-netbeans-modules-image-mime-resolver.xml, org-netbeans-modules-properties-mime-resolver.xml, Manifest.xml, plain-text-resolver.xml, cssResolver.xml, Diff.xml, javascript.xml, YAML.xml, html.xml, org-netbeans-modules-editor-settings-storage-mime-resolver.xml, org-netbeans-modules-url-mime-resolver.xml, org-netbeans-modules-pdf-mime-resolver.xml, xslt-mime-resolver.xml, org-netbeans-modules-editor-codetemplates-mime-resolver.xml, org-netbeans-modules-editor-macros-mime-resolver.xml, org-netbeans-modules-xml-services-XMLMIMEResolver.xml, org-netbeans-modules-xml-services-DTDMIMEResolver.xml, org-netbeans-modules-xml-services-ENTMIMEResolver.xml, FreemarkerResolver.xml, org-netbeans-modules-xml-services-FallbackXMLResolver.xml]

INFO [org.netbeans.core.netigso.Netigso]: bundle org.apache.commons.io@1.4.0 resolved

INFO [org.netbeans.core.netigso.Netigso]: bundle org.apache.commons.io@1.4.0 started

INFO [org.netbeans.core.netigso.Netigso]: bundle com.jcraft.jsch@0.1.44 resolved

INFO [org.netbeans.core.netigso.Netigso]: bundle com.jcraft.jsch@0.1.44 started

INFO [org.netbeans.core.netigso.Netigso]: bundle org.apache.felix.framework@3.2.2 started

WARNING [org.openide.filesystems.Ordering]: Not all children in Services/MIMEResolver/ marked with the position attribute: [com-sqlbrowser-module-sqlsupport-dataobject-SQLMimeResolver.instance], but some are: [instance-mime-resolver.xml, org-netbeans-modules-image-mime-resolver.xml, org-netbeans-modules-properties-mime-resolver.xml, Manifest.xml, plain-text-resolver.xml, cssResolver.xml, Diff.xml, javascript.xml, YAML.xml, html.xml, org-netbeans-modules-editor-settings-storage-mime-resolver.xml, org-netbeans-modules-url-mime-resolver.xml, org-netbeans-modules-pdf-mime-resolver.xml, xslt-mime-resolver.xml, org-netbeans-modules-editor-codetemplates-mime-resolver.xml, org-netbeans-modules-editor-macros-mime-resolver.xml, org-netbeans-modules-xml-services-XMLMIMEResolver.xml, org-netbeans-modules-xml-services-DTDMIMEResolver.xml, org-netbeans-modules-xml-services-ENTMIMEResolver.xml, FreemarkerResolver.xml, org-netbeans-modules-xml-services-FallbackXMLResolver.xml]

WARNING [org.openide.filesystems.Ordering]: Found same position 351 for both Toolbars/Run/com-sqlbrowser-module-sqlsupport-editor-actions-RunSQLAction.shadow and Toolbars/Run/com-sqlbrowser-module-sqlsupport-editor-actions-RunSQLAtCursorAction.shadow

WARNING [org.netbeans.TopSecurityManager]: use of system property netbeans.user has been obsoleted in favor of InstalledFileLocator at org.netbeans.modules.masterfs.providers.Attributes.getRootForAttributes(Attributes.java:104)

Diagnostic information

Input arguments:

                -Xms24m

                -Xmx64m

                -Xmx812m

                -DargumentsFileName=C:\Temp\SQLBrowserALPHA\arguments.xml

                -Dnetbeans.user.dir=J:\PB\Systems\SQLBrowser

                -Djdk.home=C:\Program

                Files\Java\jdk1.6.0_18

                -splash:C:\temp\SqlbrowserUserDir\var\cache\splash.png

                -Dnetbeans.home=C:\Temp\SQLBrowserALPHA\platform

                -Dnetbeans.user=C:\temp\SqlbrowserUserDir

                -XX:+HeapDumpOnOutOfMemoryError

                -XX:HeapDumpPath=C:\temp\SqlbrowserUserDir\var\log\heapdump.hprof

                -Dnetbeans.system_http_proxy=PAC

                http://iaproxy.xxxx.com

                -Dsun.awt.keepWorkingSetOnMinimize=true

                -Dnetbeans.dirs=C:\Temp\SQLBrowserALPHA\sqlbrowser;C:\Temp\SQLBrowserALPHA\ide

Compiler: HotSpot Tiered Compilers

Heap memory usage: initial 24.0MB maximum 721.8MB

Non heap memory usage: initial 18.2MB maximum 112.0MB

Garbage collector: PS Scavenge (Collections=7 Total time spent=0s)

Garbage collector: PS MarkSweep (Collections=0 Total time spent=0s)

Classes: loaded=4953 total loaded=4953 unloaded 0

INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 2,147,483,647

INFO [null]: Total physical memory 2,147,483,647

WARNING [org.openide.filesystems.Ordering]: Found same position 700 for both Menu/View/Separator3_1_1.instance and Menu/View/org-netbeans-core-windows-actions-ToolbarsListAction.instance

WARNING [org.netbeans.TopSecurityManager]: use of system property netbeans.user has been obsoleted in favor of InstalledFileLocator at org.netbeans.modules.versioning.Utils.getRootFilesystem(Utils.java:366)

WARNING [org.openide.filesystems.Ordering]: Found same position 400 for both Menu/Window/OpenedConnectionsAction.shadow and Menu/Window/org-netbeans-core-ide-ServicesTabAction.shadow

WARNING [org.openide.filesystems.Ordering]: Found same position 800 for both Menu/Window/com-sqlbrowser-module-tools-ShowCaptureAction.instance and Menu/Window/org-netbeans-core-windows-actions-GlobalPropertiesAction.shadow

Created attachment 115970 [details]
IDE log of first (good) execution

Created attachment 115971 [details]
IDE log of second (bad) execution

I can add the var directory (17 Megs)
or even my distribution (55 Megs) 
if need be...
Thanks

Created attachment 115972 [details]
project.xml

*** This bug has been marked as a duplicate of bug 208220 ***