I can report at least one trouble free Win XP update.
I put off the update until the weekend when I had time to deal with it if it blew up, but it was no big deal. I backed up my ZA settings, uninstalled ZASS7, then deleted the pertinent files and folders per the "clean" uninstall instructions. I installed v8, imported my settings and was off and running. No glitches, hitches or false starts.
I haven't noticed any speed differences or access delays. Startup and Shutdown are about the same. Fast User Switching works and even seems a little snappier...at least when exiting a user profile.
I'm running Win XP Pro SP2 w/all updates. Here's hoping Checkpoint zeroes in on the problem quickly.
Operating System:Windows XP Pro
Product Name:ZoneAlarm Internet Security Suite