Should've seen this coming! The drive won't recognise the cleaner disc so no cleaning.
I expect the next step will have to be replacement but it's annoying because the drive has hardly been used at all (otherwise I'm sure I'd,ve realised there was a problem while it was still under warranty). It plays DVDs absolutely fine, it tries to write DVDs but that operation seems to invariably fail and it just does nothing with CDs now (where for a while it played them very badly).
Possibly the last time I shell out 50% extra to have a name brand!
janine