Congrats on the milestone and staying with it.
Your current output looks good enough to keep you there for quite some time. No telling if the ramp up bug will catch on enough to to force you to ramp up also.
Unfortunately, a lot of my PPD is from spare servers at work (8 core 3Ghz Xeons). I can only use these until we put them into production, so my PPD will probably drop to around 5-8K pretty soon. If I can keep my 8800GTS folding 24x7, I might be able to stay up here for a while (I also have a Q6600, 2 socket 2Ghz opteron, 2 socket 3.8Ghz oldschool SC xeon, and an OLD laptop).