I have successfully installed avast on my [intel] iMac, however when I installed avast on my wife’s mac-book pro, both safari and firefox will not load web pages? so I was forced to uninstall avast.
Any advice would be appreciated.
Thanks
Quick question:
How did you manage to uninstall it? If I just delete the folder from my ‘applications’-folder it still seems to run in the background and the icon is still in the icon menu.
I’m sorry if this question seems stupid. But I just want to be able to load web pages again.
Thank you in advance.
It can be un-installed from the drop down menu, see image
I love you and thank you for your time 
Back to topic:
You could try to deactivate WebRep.
Just open up the Avira Window and go to WebRep. There you can uninstall the Plugins.
http://dl.dropbox.com/u/8657540/WebRep.png
Then just reinstall them or keep them uninstalled.
Please look into the system log (/var/log/system.log) if there are some related error messages.
I have tried this, but no joy. I did however notice something else, the download version on the cnet site appears to be an older build than the one I installed on my iMac.
When I installed it [V.7 build 36758] on my wife’s mac book pro, I tried to update it, there was no server access on safari, firefox or google chrome, so I was not able to update it.
I have now tried unsuccessfully about five times to access any website with the cnet version uploaded, yet I have no issue at all with the version 7 [36770] on my iMac, which runs like a dream.
Strange or what!!!
I accessed the system log and found the attached error, if that helps.