The webrep for firefox doesn’t work properly with Firefox 4.
http://img705.imageshack.us/img705/289/problemu.png
It works fine with small icons, but with big icons it does this, and makes it look horrendous. Please fix soon!
It is easier and better just to attach the image to your post, using the Additional Options link in the post Reply window, see image, click to expand.
That saves you having to upload to a file/image sharing site and pasting a link, it also saves people clicking on an external link to view it and imageshack.us restrict people form viewing depending on their domain having been registered.
All in all best to attach to your post.
As to your question, the image doesn’t look that bad if that is the large icon view. Mine appears fine in both large and small icon format.
What is the version of your AVAST? (6.0.1021?)
My firefox 4 RC works fine.