A little update: both VM's are still running, yay. They are both displaying this "attempt to access beyond end of device" error, though.

One of them caught a 5101 over night, which seems to be one of the slower WU. It doesn't have as many atoms as 2669 but still, it called for a1 core and this is why I'm netting just 1500PPD from this one I guess. The same VM has problems sending a finished WU to PG, bleh.