I don't know if all 831s are built alike, but this happens to mine. If I place it in my pocket, so that the pickup is moving up-down, it skips very easily, and takes awfully long to recover. Often there's a noise that follows this - as if the pickup fell down the worm gear all the way to one end of its travel. This has never happened with any other of my portables. Panasonics do this if I shake them utterly violently, but I haven't "heard" the same cases anywhere. The 831 is as good as any other modern portable if I place it in a different orientation, i.e. so that the pickup travels left-right. Thought I'd share :) Leon > Hi, > > I have used an MZ-R90 and MZ-R50 in the same pocket of the same shorts > on the same exercize machine (Nordic track). The MZ-R50 was in use for > over a year and never once skipped. The MZ-R90 has been in use for the > last month and has skipped (muted actually) at least 3 times. > > Perhaps one could argue that the MZ-R90 is smaller and shifts into a > more skip prone position in my pocket ... but I think a more likely > answer is that the MZ-R90 sacrifices some shock resistance for battery > life. ----------------------------------------------------------------- To stop getting this list send a message containing just the word "unsubscribe" to [EMAIL PROTECTED]