Paul Schofield wrote:

Thats strange. I've got SETI, Rosetta, Climate Prediction and
Predictor all set at 100 so they've all got an equal 25% share.
I'll have to keep an eye on that and make sure it starts switching
again.
Paul

Paul,

A follow up to my previous post - I have SETI resource share set to 100, and 
I increased Climate Prediction to 200 to get my 33% and 66% numbers.

Very odd that you are not switching with all four projects set to resource 
shares of 100.  What version BOINC are you running?

Bob.