Thanks, i've checked the battery retainer clips and reseated the battery. I actually solved it, temporarily atleast, but placing two heavy books (anatomy and chemistry, i've finally found better uses for them!) on top of it for an afternoon. Although once it heats up again and I use it in bed on my lap, it seems to warp again. It's probably about 1/8" but when you use it on a flat surface (like a desk..) it is annoying.
I haven't opened it, and it should still be under warranty. I shudder to think of it going away but I might just have to.
Seems weird, no? I've never had a 'warped' laptop.