The username is not captured for sessions when we access the application via Firefox 10.0.2. The username is captured when we access the application using Firefox 6, Chrome 7 and Internet Explorer 8. We applied the latest V5.6.2 FxM patch (22.214.171.1242030701) available but the problem is still occurring.
Defect FXM-252. Session username does not show up for SSL session initiated in Firefox 10 or 11. FXM-252 is a side-effect of defect FXM-239 (Firefox 10 and 11 are splitting the very first SSL record in an SSL connection which causes a problem with decrypting the traffic in the V5.6.2 FxM). The fixes for FXM-252 and FXM-239 upgrade the FxM software to handle the split records.
STATUS: The issue is fixed in the 5-6-2-2012041102 FxM hotfix/patch.
SOL91248 (FxM hotfix/patch version 5-6-2-2012041102) contains a link to the patch.