Theo Gottwald has updated his program (distributed rendering using POV-Ray and MegaPOV) to version 4.6 Distri (release candidate) 3. The man himself actually posted a comment too!
Distri 3 is ready for download. New RenderAgent, should start things faster, using a random-job algorhytm. Internal changes, no more extra-minimizer. No more internal use of batch-files. Its all integrated in the new RenderAgent (which is still in developement).
It's working for me... maybe it was a temporary issue.