This issue was reported manually by skygo.
It already has 26 duplicates 


Build: NetBeans IDE 8.1 (Build 201510222201)
VM: Java HotSpot(TM) 64-Bit Server VM, 24.80-b11, Java(TM) SE Runtime Environment, 1.7.0_80-b15
OS: Linux

User Comments:
tveimo: unknown

GUEST: <record>
  <date>2015-09-28T13:35:02</date>
  <millis>1443458102177</millis>
  <sequence>30</sequence>
  <level>300</level>
  <thread>14</thread>
  <message>SCREEN SIZE</message>
  <param>1366</param>
  <param>768</param>
  <param>1</param>
</record>
<record>
  <date>2015-09-28T13:35:02</date>
  <millis>1443458102178</millis>
  <sequence>31</sequence>
  <level>700</level>
  <thread>14</thread>
  <message>IDE_STARTUP</message>
</record>
<record>
  <date>2015-09-28T13:35:07</date>
  <millis>1443458107333</millis>
  <sequence>98</sequence>
  <level>800</level>
  <thread>14</thread>
  <message>USG_LOOK_AND_FEEL</message>
  <param>Metal</param>
  <param>Metal</param>
</record>
<record>
  <date>2015-09-28T13:35:20</date>
  <millis>1443458120177</millis>
  <sequence>270</sequence>
  <level>800</level>
  <thread>44</thread>
  <message>MEMORY</message>
  <param>4224966656</param>
</record>
<record>
  <date>2015-09-28T13:35:23</date>
  <millis>1443458123288</millis>
  <sequence>281</sequence>

satory: Tried to delete from files that are shown in the favourites view.

The IDE slows down wheneer any file system changes are done via the favourites view like renaming, copying, moving, or deleting.

GUEST: I was doing nothing.Just opened NetBeans for the first time.

GUEST: i cant rename, delete or copy file with in project. Its frezin the system.

ervis: Slow perfornance when Clicking on the "Run Project" button.

alexvsimon: open project

GUEST: Opening Start Page, which couldn't connect to internet, which in turn is the default problem

GUEST: Copy & Paste of some files in the directory structure inside of netbeans.

vgorelov: ????? mercurial ???????? ???????? ?????? netbeans, ??????? ???????? ??????? cnd.debugger.gdb2 ? ????? ????? ????????? ????????? ? ???????? ??????????????????.

GUEST: Openning project on share directory (from local VM). Always reproductible. Start is difficult with freeze.

GUEST: x

dhaowoods: first time install 8.1 rc, idexing maven repo

terje7601: Copy-pasted 3 files in the same folder of a HTML5 project

GUEST: Configurando bibliotecas

GUEST: whilst copying 3 audio files from directory in my J:\ to a public_html file under an HTML5 project

GUEST: slowness

GUEST: 1

dhaowoods: i dont know

MackSix: Added a new Library to JSF project and removed a reference to a missing Library of a different version thorugh the Properties>>Libraries>>Compile Time Libraries method.

edjon2000: Loading my style.css file

alexvsimon: open project

GUEST: Just added underscore js library and updated document root in the project.

GUEST: I make project used maven

GUEST: .

troodon: opening php project



Maximum slowness yet reported was 136453 ms, average is 33872