if you have an Nvidia, downgrade the driver version, I was having the same problem on linux on mu GT88 with new drivers (i fact, everything was crappy with those drivers) and rolled back to the earlier version and all went fine.

There are recommended for each gpu version, newer one are not usually the best for older cards.

ATI suffers mostly from the same.

1.8 pre-release download here t.co/A3aXYOG

And BTW, I can say FIRST! and troll the shit out of me, cause I was the first to post the link to new jar file

Servers are also updated to the new release in case someone want to test it out!

Tunes the nooby penguin
Shall check it out now