Turkey, 6.0.631.003 still contains the bug (and so does 6.0.667.000 released Sep 6, 2005; please see
http://download.zonelabs.com/bin/free/information/znalm/zaReleaseHistory.html )
tdehli, there are currently two (unrelated) compatibility problems between Avast and ZonaAlarm. One, quite unimportnat, is indeed related to avast WebShield and privacy features of ZA.
The second one, however, is quite critical because it's a bug in the ZA driver that can lead to a system crash. This is the one you're having problem with.
I have a fixed version of the ZA driver. I've promised that I won't make it publicly available but I can send it to you by email (which I'm doing right now) together with the installation instructions (as given by the ZoneLabs developers).
Please let me know if the patched driver helps - but it should, so far, it has helped to everyone I've sent it to.
Thanks
Vlk