Gimp 2.0 uses a little over 28MB with two 640x480 images open (10MB of which appears to be scriptfu stuff)

Despite playing the first tracks much more than the later tracks on most of my CDs (I'm a habitual cd swapping junkie), the latter tracks on my CDs tend to fail before the earlier ones when the things starts to get beat up. I would assume that an 80 minute disc burnt to the rim of the platter would fare worse than a rip-off weezer album.

I don't know why this is, exactly, but there is definitely a corrolation between length and failure, at least in my experience. Wow, that has some interesting sexual meaning as well!