OK, it does look like something might be wrong. It was fine for 53 minutes and now it has become unresponsive again.
The file scanner is apparently active, although the disk isn’t doing anything, but the little rotating arrow icon top left of the screen is rotating. The Soundbridge will not connect either, as expected.
The slug itself appears fine as I can read/write to the disk through Windows Explorer with no trouble.
This sounds like a deadlock, but it’s one I haven’t seen yet. I’ll try and track it down.
If you have the disk space to run -d9 and get a log of when it hangs, that would be a big help.