I wouldn't call it common a few people have complained on the boards but they always do about every device every time. Yes it exists but common, I don't think so.
Oh yeah, some help.

Get headphones with a right-angle plug. This reduces lateral strain on your headphone circuit which can work wires loose causing static and eventual failure if enough lateral motion is applied. I had this happen to my Compaq iPaq 3975 when my Sony MDRV700 cable got caught on a railing. I had to send it to PPCTechs for repair. If your favorite headphones don't have a right-angle jack you can get an adapter with a volume control from Radio Shack.