You're trying to run binaries that were not made for your version of ubuntu so you'll have to compile it for yourself. Also there's a good chance you're trying to run a version of cgminer that doesn't even mine on GPUs since cgminer hasn't mined on GPUs for quite a while now. Try different software.
It's cgminer 3.7.2 so the last GPU version I believe, and the weird thing is sometimes (now for example) it DOES work - although I think it might be lowering my expected khash/s by ~100 pr. GPU.
Compiling a version myself sounds like it's over my skill level to dabble in, but installing a newer Ubuntu version like 13.10 should fix this aswell?