Memzak

As stated above, the majority of linux based problems are generally caused by out of date lwjgl libraries.

Ubuntu 11.10 user here. Haven't updated to the latest version yet, but the majority of crashes to do with modpacks and whatnot is because of the lwjgl.jar not being the latest version. (which doesn't affect Windows users and so was never a priority to update, in fact a couple months/weeks ago Jeb attempted to update the lwjgl.jar file that came with minecraft and eventually gave up as it was causing stupid errors in OSX (not linux) about silly thing) Long story short, get the latest lwjgl files. (includes toe jar's and the so's) As for the correct download link, here are the files you are meant to download. Get the 2.8.3 files and put them in your bin folder. (Replace and rename accordingly) If the 2.8.3 files give errors try the 2.8.1. Apparently there's some weird version of the lwgjl that does crazy things to the game, but for the genreal case 2.8.3 should be fine.