Update Avast through university proxy

I just installed avast free on Ubuntu 10.10 32-bit and I get an error: Downloaded update is corrupted, try again. I’m guessing it’s because I’m trying to update through a proxy but i can’t seem to find the proxy settings for avast. Can anyone tell me how to configure the proxy or at least where the proxy configuration file is?

Avast Window: Settings > Updates > Proxy Settings

Taken from this post: http://forum.avast.com/index.php?topic=50166.0

Hallo, avast4workstation just downloads file from the web. So, proxy setting is the same as for the layer which is used here - the curl library. So, setting http_proxy environment variable to something like:

SET http_proxy=http://[[username[:password]@]hostname[:port]

does the job. parts in aren’t mandatory

regards,
pc