The problem with all the contacts in the unified list disappearing should be resolved in this update. Updating through Sparkle has also been causing trouble for a number of people; this update should resolve future updates with Sparkle. If you have trouble updating to alpha 7 from an earlier release, manually downloading and reinstalling will resolve any problems.
As a number of you have commented, HTML-stripping for ICQ accounts is still disabled. This was necessary because of the new loading system. I'm still working on figuring out the best way to get that working well, without having to manually relaunch iChatAgent.
- (Bug) Fixed contacts disappearing from the unified contact list shortly after launch
- (Bug) Improved the installation and upgrade process. Future updates using Sparkle should be applied more consistently.