A few days ago (on december 4th, to be precise), one of my boxes reported a couple hundred wu's in less than 5 seconds (each). All of them have, naturally, been marked as invalid or "validations inconclusive". I did no reboot nor even restarted boinc because when I noticed the incredible amount of pending tasks, that same box was already crunching normally.
A few dozen of them are still waiting for (in)validation. The weird thing is that some of them have been sent to more than 6 hosts. Most of them returned those wu's in just a couple of seconds too, which makes me suspect that this was not a host issue, but something strange with the tasks themselves.
Here's my host: http://www.primegrid.com/results.php?hostid=228778&offset=0&show_names=0&state=2&appid=
And here are some "mad" wu's:
Any ideas on what happened?
676754^262144+1 is prime