At last! I was running XoloX for close to 12 hours today with no problems, after reducing the upload speed to 3 KB/second (the upload speed controls the number of connections in XoloX). So basically yes, reducing the number of connections would seem to fix the problem. Of course I was not using Gnucleus, but really the same should apply for any Gnutella client.

Anyway after I have had XoloX running a few more times, I will know for sure whether this is the answer to my problem. I will post the results here.