well i dont want to be offensive but maybe its partially because they dont understand what you are saying.
You barely use any punctuations (like . , ) and your sentences are not the best setup grammarwise.....
what i made up from your text:
- you had windows vista with 4.8
- then you upgraded your windows to windows 7 (i assume this since nobody buys vista and an upgrade between xp and win7 is not possible without clean install)
- after the OS upgrade you upgraded avast 4.8 to 5
Did you try to uninstall avast completely and reboot BEFORE installing another version?
Did you use the avast cleaner tool to completely remove all traces of avast? (
http://files.avast.com/files/eng/aswclnr.exe)