My
Thermaltake Mambo VC2000's front bezel was broken upon purchase, and I could not return it since it was on clearance sale at a local computer store. So I have some electrical tape keeping the bezel attached to the rest of the case.

Cable management is also a pain since there's little space behind the motherboard tray and no holes around the motherboard for cables route through.

I also have an 80 mm fan on the side panel rated at 30 dBA, which I lower down to 1400 rpm everytime I start up my computer so that the noise is more tolerable. I also have a choice between two mice, a trackpoint pointer built into my keyboard, or a Logitech trackball, which can be seen in the above photo. I've become moderately accustomed to using the trackpoint for gaming, so it doesn't bother me much, but it'd be nice to have a decent "gaming" quality mouse.

The middle button is superglued on, so I've been stuck without a middle mouse button for a while. It's been a pain for tabbed browsing. I'm not really sure how the button broke. The middle button fell off one day, so I super-glued it back on. It came off again after a few weeks, so I tried to super glue it back on it wouldn't fit correctly due to the super glue that was still stuck on.
So I stuck it in a little bit of acetone to try to get the excess adhesive off, and the button itself started to dissolve. The little capful of acetone was turning black with the particles of mouse button, so I quickly removed it and tried to wipe off any acetone. Now that button has my fingerprint permanently imprinted on it. I still glued it back to where it once served me, but it is now too stiff and unpressable to be of any use.