This is becoming increasingly frequent with mine, as well.
Simply, jemplode (or emplode, which I stopped using few months ago) won't receive any sign of life from empeg when Synchronizing. Then I have to fsck. I don't find any corelation between what operations are being performed. Sometimes I'm uploading tunes, other times I am altering playlists or updating track data, other times both. File trasnfers (via ethernet) always complete successfully. Then, when rebuilding database, I get these errors in jemplode:

Code:

---

...
irs=[class org.jempeg.nodestore.PlaylistPair[] of length 2]; tagName=genre]
SynchronizeQueue.enqueue (80 changes): replaced [FileInfoDatabaseChange: name=Erebel Playlist from the 80s; node=[FIDPlayl
bel Playlist from the 80s; fid = 8240; childCount = 2]; fid=8240; attempt=0; length=5000; oldValue=; newValue=Various; des
=Update Erebel Playlist from the 80s; playlistPairs=[class org.jempeg.nodestore.PlaylistPair[] of length 2]; tagName=genre
FileInfoDatabaseChange: name=Erebel Playlist from the 80s; node=[FIDPlaylist: Erebel Playlist from the 80s; fid = 8240; ch
 = 2]; fid=8240; attempt=0; length=5000; oldValue=; newValue=Various; description=Update Erebel Playlist from the 80s; pla
rs=[class org.jempeg.nodestore.PlaylistPair[] of length 2]; tagName=year]
Retry #0 failed. (Failed to receive packet from device.)
Retry #1 failed. (Failed to receive packet from device.)
Retry #2 failed. (Failed to receive packet from device.)
Retry #3 failed. (Failed to receive packet from device.)
Desperately trying to restart the connection before we give up ...
Retry #4 failed. (Failed to receive packet from device.)
Retry #5 failed. (Failed to receive packet from device.)
Retry #6 failed. (Failed to receive packet from device.)
Retry #7 failed. (Failed to receive packet from device.)
Retry #8 failed. (Failed to receive packet from device.)
Retry #9 failed. (Failed to receive packet from device.)
Retry #10 failed. (Failed to receive packet from device.)
Retry #11 failed. (Failed to receive packet from device.)
Retry #12 failed. (Failed to receive packet from device.)
Retry #13 failed. (Failed to receive packet from device.)
Retry #14 failed. (Failed to receive packet from device.)
Retry #15 failed. (Failed to receive packet from device.)
Retry #16 failed. (Failed to receive packet from device.)

---

at which point I'm forced to power off the empeg. Upon restart, unless I do a fsck in the console, I get stuck with very long media checks at EVERY sync from jemplode; so I have to go to console and do fsck.

Basically, everytime I update the empeg content, if I get unlucky (it happens to me one every five syncs, on average), I end up with on-hour long fsck.