I am running Boinc 4.43 for windows with both Climateprediction and protein predictor.
I upgraded to version 4.43 of boinc 3 weeks ago and all was good. Work continued as normal.
My credits continued to go up but looking at the exciting new statistics section I realised that for the last 2 weeks my "recent avg credit" has been stuck at 47.76. I had 2 days when my pc wasn't on... no change.
Predictors credit system is continuing to work as normal so I can only assuem something has got "stuck" in my climate prediction account.

Well it isn't fatal as models seem to be continuing normally, my actual credits are going up and 47 is probably higher than my actual recent credit but wondered if anyone has any idea what is going on!?

Toby seems to have a fair idea.

See http://climateapps2.oucs.ox.ac.uk/cpdnboinc/forum_thread.php?id=2517