I was fair set to give up on this (seven clues entered) when I finally - on the third visit, and halfway through Sunday - got the long 11/16. Once that was in the rest went in one by one. Not my favouritest Paul puzzle I have to say.
I have set up a spreadsheet (on Google Docs) where individual cells act as Scrabble tiles - you can enter a letter in one and then pick it up and move it around. I find it quite handy as a virtual Scrabble board for anagrams.