I'm not actually sure exactly when this happened but my scrollbar has taken a vacation. I just noticed one day that it was gone. I'm using firefox-devel from shadowhand's repo, now I know it has worked before using this. It coule the GTK theme which I changed not long ago but still, why would this be happening? I know it looks like it's leaving a space but it's not invisible, it I try to click where it should be and drag it I just select text on the page.
Any ideas would be appreciated
Mmm... It looks like you've got Firefox skinned. I'd agree with Dibble, use the default skin. It will mimick your GTK theme anyway...