[einstein_4.81_i] defunct

Hello,

Einstein just runs crazy on one of my machines ( http://einsteinathome.org/host/392814 )

First it continous downloading new workunits until the limit of 8 was reached, after that Einstein cries about sheduler not reachable. Finally BOINC eats up to 99% cpu time and did not react, so only kill -9 helps.
I'm running boinc (default 4.43) over 6 month an that machine, mostly with CPDN and LHC and it never crashed like this.
Einstein was added some days ago.

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND

desti 26715 10.9 0.6 5740 3144 ? S Aug21 640:44 ./boinc -return_results_immediately

desti 16512 60.2 0.0 0 0 ? ZN 03:26 508:38 [einstein_4.81_i] defunct>

The 7 new downloaded workunits are nowhere, in the einstein project dir is only the one, which is currently in process.