I have no idea how to explain you what do I mean, but take a look at the screenshot, as it might allow you to understand my situation a bit better: screenshot here
I am using Ubuntu 10.04 i386.
Does anyone have any idea how could I have caused this, and how can I fix it?
Just a note, I've had tried to install some custom color schemes for eclipse manually, but at that time I haven't experienced such issues...