I switched my two windows machines from the pool to mining solo beginning of the week and found 2 blocks so far. Not sure if thats simply dumb luck or what... but I made way more BBP this week than if Id had been on the pool.
Thanks.
And right now at this second we have 2500 machines "solo" mining against the pool also, just so you all know.
Lets here from some more users who have more machines so we can isolate the issue away from luck next.