Bad news: I have seen this error occur once with 1.13.2.
-----Original Message-----
Brion Vibber writes:
from within function
"MediaWikiBagOStuff::_doinsert". MySQL returned
error "1213:
Deadlock found when trying to get lock; try restarting transaction
(localhost)".
I believe we fixed this one in 1.13.1... You should go ahead and upgrade
to 1.13.2 to fix this and a security issue.