In my search to finding out why my cvs compiled gem gives me vertical green lines, I found that using the planet-ccrma compile of 0.87-4 yields the same results.
Oh, and by the way, I thought I had a radeon mobility 7500, it actually is a radeon mobility 7500. Probably makes no difference, but thought I'd mention it. If anyone is running gem on linux successfully on radeon mobility 7500, I'd be interested to know.
Cheers!