Backlight kind of staying on when sleeping...

[luxeluxe]

When it's time for my screen and backlight to turn off the, hmmm, how to describe this, i can see it's sort of still lit up, but just a blank screen, like a slightly lit up black screen, and even if i push the off button (without actually powering down) it stays the same, screen doesn't quite turn off. I have to take the battery out, turn it back on. it happens about 5 times a day.

i'm currently using the caulkulin rom, but it was happening before that. resets haven't helped. is this a hardware issue maybe?