So, I upgraded from Jaunty to Koala when the testing version came out a few weeks ago. Did the same thing before from Intrepid to Jaunty and everything went just fine. After upgrade, rebooted and it gave a bunch of device errors and that there were bad sectors, etc. Tons of errors. Asked if it should fix them. I said yes and it said it did. Rebooted and same deal. Went back to Jaunty. When the beta came out a few days ago, thought would try again but with straight install. Same deal. Errors up the wazoo. Went back to Jaunty. Dunno what the heck the problem is. Want to go to Karmic and try out the new features, but seems like its a bad idea, even when the final stable comes out.