Is my Avast corrupt?

Hello

I tried a manual database update of Avast 4.8 Home, and eventually cancelled out as it kept losing the server connection.

Now when I try to do a manual update, nothing seems to happen. Is the installation now corrupt? If so, how should I proceed to remove and reinstall?

Thanks for any assistance
Jenny

Which is your Windows? 98, Me, XP, Vista?
Do you use any other antivirus in your computer?
Which is your firewall?

Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair).
If this does not help, can you uninstall / boot / install / boot again?