Sadly, this problem was around for before this kernel (you can find some discussion of it deeper back in this thread)..
I had this problem too with the 28th kernel on froyo. This problem has been around for a while, but it is different from before. with previous kernels, this only happened after I boot. Once it got to a stable state after boot, coming back from sleep has never been a problem, at least until now with the 28th kernel. I too had to revert back to an old kernel.