I have some communication with ZoneLabs now (as I do some beta testing of 5.5), and in the last response they asked if I could try disabling avast! to see if that helps. So they are aware of the problem. For starters I have now disabled scanning of the ZA files (not easy, they are spread around the HDD
No hang this boot, but I’ll try for a while to see if this is the problem (can’t really see why, but…)
BTW: You can help by helping beta-testing ZA with avast!, use this link: http://download.zonelabs.com/bin/free/beta