Weird Lag/Script Time Peaks

I have a weird lag problem on several SIMs I manage. In short intervalls I get massive peaks in script time, cause corresponding drops in time dilation and SIM FPS. I spent hours hunting for the responsible script just to find out that there isn't one. Those peaks affect different scripts. When I caught it at one and deleted the affected object, the next peak affacted another one. (As example: a flower emitter usually taking 0.5ms at such a peak suddenly took 30ms, a sound emitter that usually takes 0.04ms took 4ms and so on.) A region restart didn't help either.

Does anybody have similar problems? I'd like to know how widespread this is. A called Linden didn't find anything unusual.

I manage a private island, I get this too, I assume it's a SL problem, but if there is a 'real' reason I'd love to know too.

It's kinda new, the first reports I got about this are not older than a week or two.

I can do a check an a object can register 1.00ms and then rescan and its back down to 0.01ms, also changes on a daily basis. however, it's happened less since I banned most temp rezzers, but that was just a week ago, so not enough time to assume that helped

I suspected TempRezzers too, but they were removed.