Same problem here for both my wife and I. We are running minecraft on Ultrabooks (Dell and Toshiba) with integrated graphics. We get 20-40 fps with 1.5.2. With 1.6.1, we start out with 20 fps and then rapidly drop to 3-5, which is unplayable. We play with the launcher closed. We have updated to the most recent java, the most recent graphics drivers, and the most recent networks drivers, to no avail.
Fortunately, I did not delete the executable for 1.5.2, so I am still able to play.
Roger Nightingale
Same problem here for both my wife and I. We are running minecraft on Ultrabooks (Dell and Toshiba) with integrated graphics. We get 20-40 fps with 1.5.2. With 1.6.1, we start out with 20 fps and then rapidly drop to 3-5, which is unplayable. We play with the launcher closed. We have updated to the most recent java, the most recent graphics drivers, and the most recent networks drivers, to no avail.
Fortunately, I did not delete the executable for 1.5.2, so I am still able to play.