Hi I just received my 15" mbp. What a beast! This will definitely be able to replace my aging-although-quite-capable windows desktop. I have noticed some problems with the gfx dynamic switching when using Firefox and Thunderbird, though. They seem very eager to use the discrete gfx card... Any tips on making these two apps not use any hardware acceleration AT ALL? I have found tons of threads about dynamic switching, but I was hoping maybe someone had specific tweaks for these two apps. Thanks!