Hi!
I updated to avast 7 from the built-in program and rebooted. No problems! Every shield is working, the computer is working as fast as before and no conflict with the firewall (Comodo 5.9, I tested by blocking iexplorer and comodo dragon with new blocking rules in comodo and the browsers could not connect to internet, I removed the rules and they coul connect again). Manual update works also. No random hanging. I used the computer with avast 7 for almost 2 hour now and rebooted twice (just to be sure) and......so far so good! The computer is a Dell Studio with win 7 64bit. For some days ago the upgrade to avast 7 did not work (as I wrote on page 25)
I disabled avast's autosandbox and reputation sevices.
Again sorry for my english!
__________________________________________________________________________________________________________________________________________
Win XP Home Premium sp3/2GB ram/2.8 ghz/ avast! 7 free (autosandbox disabled/ Comodo firewall 5.9, sandbox and Df+ enabled/ Malwarebytes free.