I had to download a new beta this morning - couldn't understand why the client wouldn't start.
However, it did continue with my current WU, which was sitting at 66% completed. Interestingly, it's now doing 1% in 18 minutes and my temps are steady at 47C. On the previous beta this WU had slowed to around 23 minutes per 1% with temps at 50C - and I'm still running much the same additional programmes (and I still have the central heating on

).