When processing the page immedately after a successful container managed
authentication "login", the user-agent header is NULL. If I refresh the page or
go to other pages, the user-agent header is rendered properly.

I have discussed this issue on the tomcat-user list for a number of days,
thinking it must be something I had done wrong,

Here are the steps:

1) Request a protected page from my application.
2) My CMA login page pops up, I enter userid and password.
3) This POST is issued when I submit it:
     POST /stars/auth/ j_username=user1&j_password=password1&login=Login
4) HTTPLiveHeaders show all of the GET requests have a user-agent set
   (I've included all 90 lines of them below).
5) My page that appears has the following code:
  <%
  String _userAgent = request.getHeader("user-agent");
  out.write("USER-AGENT="+_userAgent);
  ...
6) And displays the following on my page:
  USER-AGENT=null

START OF HTTPLiveHeaders capture from the above POST:

http://smartfish:8080/stars/auth/

POST /stars/auth/ HTTP/1.1
Host: smartfish:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12)
Gecko/20050915 Firefox/1.0.7
Accept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://smartfish:8080/stars/HomePage.do
Cookie: JSESSIONID=3F6575A5957AC84BCC60FA878ED092A5.srv1; username=user1
Content-Type: application/x-www-form-urlencoded
Content-Length: 45
j_username=user1&j_password=password1&login=Login
HTTP/1.x 302 Moved Temporarily
Server: Apache-Coyote/1.1
Location:
http://smartfish:8080/stars/j_security_check?j_username=user1&j_password=fbce66f99c809283638f344ecb3d50674ea64189
Content-Length: 0
Date: Wed, 12 Oct 2005 16:33:46 GMT
----------------------------------------------------------
http://smartfish:8080/stars/j_security_check?j_username=user1&j_password=fbce66f99c809283638f344ecb3d50674ea64189

GET
/stars/j_security_check?j_username=user1&j_password=fbce66f99c809283638f344ecb3d50674ea64189
HTTP/1.1
Host: smartfish:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12)
Gecko/20050915 Firefox/1.0.7
Accept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://smartfish:8080/stars/HomePage.do
Cookie: JSESSIONID=3F6575A5957AC84BCC60FA878ED092A5.srv1; username=user1

HTTP/1.x 302 Moved Temporarily
Server: Apache-Coyote/1.1
Location: http://smartfish:8080/stars/HomePage.do
Content-Length: 0
Date: Wed, 12 Oct 2005 16:33:46 GMT
----------------------------------------------------------
http://smartfish:8080/stars/HomePage.do

GET /stars/HomePage.do HTTP/1.1
Host: smartfish:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12)
Gecko/20050915 Firefox/1.0.7
Accept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://smartfish:8080/stars/HomePage.do
Cookie: JSESSIONID=3F6575A5957AC84BCC60FA878ED092A5.srv1; username=user1

HTTP/1.x 200 OK
Server: Apache-Coyote/1.1
Pragma: No-cache
Cache-Control: no-cache,no-store,max-age=0
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/html;charset=UTF-8
Content-Language: en
Content-Length: 2989
Date: Wed, 12 Oct 2005 16:33:52 GMT
----------------------------------------------------------
http://smartfish:8080/stars/WEB-INF/pages/%3C%=request.getContextPath()%%3E/images/cm_fill.gif

GET /stars/WEB-INF/pages/%3C%=request.getContextPath()%%3E/images/cm_fill.gif
HTTP/1.1
Host: smartfish:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12)
Gecko/20050915 Firefox/1.0.7
Accept: image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://smartfish:8080/stars/HomePage.do
Cookie: JSESSIONID=3F6575A5957AC84BCC60FA878ED092A5.srv1; username=user1

HTTP/1.x 400 Invalid URI
Server: Apache-Coyote/1.1
Transfer-Encoding: chunked
Date: Wed, 12 Oct 2005 16:33:52 GMT
Connection: close
----------------------------------------------------------