Thanks for the replies everyone.

In the end I bit the bullet and did a bulk upload with the v3a11 installed. The actual uploading worked fine but it crashed afterwards and likewise on almost every subsequent synch while I was adding playlists.

Even though I have disabled the filesystem check on synch in Hijack, there were a few occasions where it ran fsck. With hindsight I now realise that something on the disk may be corrupt as a result.

I still don't know why it crashed so regularly while doing even the most basic synch and unless I can figure that out I'll be reverting back to 2.0 for any future uploads or playlist changes.

Edit:It appears I was using Emplode 2.0b-13 rather than version 2.10, d'oh.