I woke up today, and on the Mac Mini that I crunch Rosetta@home on 24/7, I noticed that only one of the two processors were actually doing work. The other processor was stuck doing a syslogd operation and mDNSResponder operation.

I took a look at the console, and I keep getting these errors over and over back to back.

Console:
new-host3 /Applications/BOINCManager.app/Contents/Resources/boinc[7060]: *** process 7060 exceeded 500 log message per second limit - remaining messages per second discarded ***

new-host3 /Applications/BOINCManager.app/Contents/Resources/boinc[7060]: dnssd_clientstub deliver_request: socketpair failed 24 (Too many open files)

and then repeat.

Any knowledge why this is happening?
Also, I am running BOINC 6 because it is the recommended version for Rosetta@home.

After a restart, the problem went away. However, after around 16 days, the problem came back. Any news on this so far?

Since Rosetta tasks do not take 16 days to complete, I suspect your problem lies elsewhere. Perhaps the messages being logged at that rate would be a good clue. What log is it referring to? And what messages are being recorded there?

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Rosetta Moderator: Mod.Sense

Im not talking about tasks that took 16 days, I mean after the computer running 24/7 for 16 Days crunching Rosetta@home WU, the problem came back.

A re-boot fixed it, but I don't want to restart every 16 days, its suppose to be headless and require no more input from me when running.

Those logs were from the Console for Mac OS X Snow Leopard.

BOINC is the process running, and so far those are the only things that are outputted in the Console. I have since restarted, and the problem has not come back, however I susepct, I will be posting here again in another 16 days.

Im not talking about tasks that took 16 days, I mean after the computer running 24/7 for 16 Days crunching Rosetta@home WU, the problem came back.

A re-boot fixed it, but I don't want to restart every 16 days, its suppose to be headless and require no more input from me when running.

Those logs were from the Console for Mac OS X Snow Leopard.

BOINC is the process running, and so far those are the only things that are outputted in the Console. I have since restarted, and the problem has not come back, however I susepct, I will be posting here again in another 16 days.

It seems to be BOINC client problem, and not Rosetta@home specific.
I used to have similar error as yours ("too many open files" message in a log file), when I was using 6.12.35.

This problem is fixed in 6.12.41 or later.
http://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=2789&nowrap=true#53464 (MilkyWay@home Forum)
http://boinc.berkeley.edu/trac/ticket/1141
http://boinc.berkeley.edu/trac/ticket/1144

I've upgraded to 6.12.43 on both Mac OS X 10.6.8 and 10.7.4 machines about 8 months ago, and not experiencing problems so far, on Rosetta@home and several other projects.

6.12.43 is not an officially recommended version, but it's worth trying upgrading to it.

#Edit : added link to MilkyWay@Home forum post