I have been recording for about a year, and i had seen this happen once in the past, but i just wrote it off as a fluke, but not it has come back and started happening on both of my iRivers. Its like for a few seconds in the recording every once and a while, the sound gets scrambled up, then it goes back to normal, i think its called "dropped samples". I haven't cleared off my recorders in a little while, and luckily last night i was just recording my band jam for archival purposes, but could it be that my recorders either need to be defragmented or reformatted? I was recording on this one with about 2 gigs out of 20 left on the disk and about 25 recordings still on it. Any help is appreciated!
EDIT: And now that i think about it, there was a warning that popped up saying "Warning: 000000002" or something like that, but i just thought that meant it was low on disc space.