This seems similar to the bug reported here: http://sourceforge.net/tracker/index.php?func=detail&aid=2055697&group_id=98788&atid=622063 that was fixed and closed. The difference is the rate. It's very hard to reproduce nowadays but it still happens once in a while. Bbefore, the bug could be reproduced after 5-10 minutes of heavy network, now it happens after 20+ hours or so. So this is probably a different bug. Happens with coLinux 0.8.0 but I suspect with other versions as well. Although slirp crashes, coLinux still works properly albeit no networking.