It only happened on this forum now it's happening elsewhere - I'm getting these random - chars that go vertically on the page - I cannot select them or anything and the only way they seem to go is if I do "Clear Private Data" and clear the Cache. After clearing it though, it seems to return a few visits later on.
This image shows you an example -->
http://img82.imageshack.us/img82/253/probxj5.jpg
This is annoying having to do this. These things appear more than once on the page.
Firefox 2.0 final.
Anyone any ideas?