Problems with tabs at top

[mehhem]

Hi,

I noticed when I hover over the main links "Astronomy Forum, Astro photos, Amazon, etc" I see glitches with the display. I'm not sure if it's an addon I use in Firefox or something else.

Addons I use in Firefox are: Adblock Plus, Firebug, Form History Control, Speed Dial, and SQLite Manager.

Any suggestions would be great. Thanks.

[Aloicious]

I get alot of problems with the top tabs too, I use firefox, IE8 and IE9, as well as chrome, and they all have problems with the graphical interface.