Facebook won't work with New update

having installed new Avast I can’t vie wfacebook any more. had to uninstall and install older version to get it working. has anyone else come across this and how might i fix it?

I have no problems with Facebook on my systems.

We need more information as to your Operating System and browser you are using.

Thanks

win xp sp 3 and all updates. IE 8. what more do you need?

Can access any other website except Facebook. Come up with the Screen ‘diagnose connection problems’

is it blocking the site?

Absolutly no problem connecting to Facebook:
http://www.facebook.com/avast <== this is avast! on Facebook

It looks like you are in Australia ???

Many people here use avast! and Facebook.

Check your firewall settings and make sure that’s not what’s blocking Facebook.
avast! scans, it doesn’t block.