I have read through most of the other similar threads and made no progress. For the record I am a computer repair tech for a living and have used avast for years.
Product: Avast 5 Free (Registered)
OS: Vista Home Premium SP2 32 Bit
Computer: Dell Inspiron 1525 - Celeron 2.00/3GB
General:
Other systems on the network can update.
Info:
Can connect for windows updates
Can surf internet anywhere fine, including avast.com
Can ping avast update servers (downloadXXX.avast.com - Last fail was download642.avast.com, pingable)
Have tried, uninstall/reinstall & repair options.
Have redownloaded avast setup.
Have used aswclear before natural uninstall and after.
Have run removal tools for mcafee and norton, which were previously installed on the system.
Have run CCleaner, checked HiJackThis, and several other manual checks.
Have cleared hosts file.
Have checked IE proxy settings through internet options and also the registry.
Maybe have done some other things, can't remember.
Problem has persisted over 2 days so not a "busy" issue.
System does everything perfectly, except update avast.
Open to any suggestioins. I had this happen on one other system in the past but it turned out to be either the host file or proxy settings. Not the case here. Thanks in advance.