IP search in admin panel freezes MySQL?
 

Our website crashed last night, and it was entirely and totally due to a rookie mistake - not checking nightly backup sizes. It filled up the /var partition, and some tables got corrupted.

Anyways, I've optimized and repaired tables, and all is well. However, for some goofy reason, when an admin/mod specifically attempts to search an IP (under Admin Panel --> Users --> Search IP Addresses), it hangs the system. Obviously related to MySQL, because as soon as I stop/restart it, all is well again.

I've reviewed the mysqld.log but am not quite sure what I'm looking for; this *ONLY* happens (that I know of) when an IP search is conducted. Any ideas?