[xwiki-users] Login cookie validation hash mismatch problem when using Weblogic

Hi Users, I have been trying out Xwiki Enterprise 2.7 for a few weeks now. I have successfully installed it in Tomcat 6 and Oracle 9i environment. But my target appserver is Weblogic 10 and I also have some luck in successfully installing it there. I also have uploaded the xwiki 2.7.xar into the xwiki instance and successfully added it. But I am encountering errors in Weblogic whenever I try logging into xwiki using Admin/admin. Here is the log file generated : 2011-02-24 17:27:38,671 [http://localhost:7001/xwiki/bin/view/Main] INFO  .AbstractXWikiMigrationManager  - No storage migration required since current version is [15429] 2011-02-24 17:27:43,921 [http://localhost:7001/xwiki/resources/css/microformats.css] WARN  internal.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/exceptioninline.vm@1,24 2011-02-24 17:27:50,468 [http://localhost:7001/xwiki/bin/login/XWiki/XWikiLogin?xredirect=http%3A%2F…] WARN  internal.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/login.vm@28,33 2011-02-24 17:27:50,859 [http://localhost:7001/xwiki/resources/css/microformats.css] WARN  internal.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/exceptioninline.vm@1,24 2011-02-24 17:27:59,625 [http://localhost:7001/xwiki/bin/view/Main] WARN  xwiki.MyPersistentLoginManager  - Login cookie validation hash mismatch! Cookies have been tampered with 2011-02-24 17:27:59,640 [http://localhost:7001/xwiki/bin/view/Main] WARN  xwiki.MyPersistentLoginManager  - Login cookie validation hash mismatch! Cookies have been tampered with 2011-02-24 17:27:59,828 [http://localhost:7001/xwiki/bin/loginsubmit/XWiki/XWikiLogin] WARN  internal.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/login.vm@28,33 2011-02-24 17:28:00,093 [http://localhost:7001/xwiki/resources/css/microformats.css] WARN  internal.DefaultVelocityEngine  - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/exceptioninline.vm@1,24 This is a new instance with the xar data. I haven't added any new data yet into xwiki. I don't encounter this problem when I am running xwiki on tomcat. Is this a bug or does anybody know a workaround for this? I have also tried using xwiki 2.6 and xwiki 3.0 milestone 2 with their respective xars but still encounters this problem on weblogic. Thanks! Ernn