Hi! Thanks to all who have replied. I'm really baffled with this. I've upgraded to a more recent snapshot, and it has gone away since. However I'm not really sure that the error was in the previous snapshot, in fact it was probably a PEBKAC, but I've no idea what could've been the problem. Anyway, sorry for the noise.
Daniel -- LIVAI Daniel PGP key ID = 0x4AC0A4B1 Key fingerprint = D037 03B9 C12D D338 4412 2D83 1373 917A 4AC0 A4B1
