Last night i was trying to help a mate root and flash a rom on his 7500, and for some reason booting into recovery/download mode seems impossible.
Tried every button combo, unless it's not the power button alone nothing happens.
My wife's gnex has suddenly started prompting me with a no signal icon out of the blue. I up to that point it has been working fine for more the better 4 months. No changes have been made, and nothing installed outside the normal ap...
Maybe you need to wipe dalvik cache or something. I've been using the kernel since it was released with no problems at all.
I'll definitely do it when I've got some time on my hands to experiment with the device again :D
Just an FYI don't flash...