This may be related to the "Private Header" issue. Using ZA 6.5.722 when I access the configuration page of my Linksys wireless G router none of the option tabs are displayed. If I turn off ZA all works just fine. If I use a previous version of ZA (5.5.094) every thing displays as expected. I have not experienced any other access problem with ZA 6.5.
Operating System:Windows 2000 Pro
Product Name:ZoneAlarm Pro