I had to disable backgrounds as they didn't work with match screens, but if you want to reactivate them, you'll need to edit the transparency value on line 41 of client object browser.xml. 0 is completely transparent, 1 is completely opaque.
Absolutely no need for three posts within 6 hours. I work and have other priorities. I can answer general questions on the bus home, I can't tell people how to edit code on the bus.
You'll need to edit line 55, remove that widget.
Yeah not a clue mate. I haven't seen it raised by anyone one else, nor have I seen it myself. Can't think what'd cause it.