I have tried up the new driver with the few games that run on Vista 64, "The Witcher" and with the new driver the game works in both high quality and low quality graphics. With the old driver it was crashing in high quality mode. So seems this driver is the way to go for those using some game and 3D graphics users.
I just found out (halfway from experience) that if you install the driver from Intel you will lose the LCD brightness on screen display. The little meter that appears at the bottom of the screen when you adjust the brightness. Instead, if you update with the drivers released by Lenovo on their site, you'll retain all the original Lenovo functionality. Just to note, though, the drivers I installed direct from Intel worked just fine.
Hello, I had the brightness problem some time ago, but do not know when it went away. I have Intel original driver 220.127.116.112, I can change brightness, some small problems are fixed, especially screen stays on after undocking, which fails on Lenovo drivers.
I didn't mean that the brightness could not be changed with the Intel driver. With the driver direct from Intel, the brightness can still be changed via the hotkeys and the functionality is all there. The only thing that is missing is the brightness meter on-screen-display that appears while you're changing the brightness.
I don't use a dock for my X61t yet, so I haven't noticed the performance differences in the drivers. I think the version I have is 7.14...