I've done a little research and tweaked the my.cnf file and now it says:
+----+------+--------------------------------------+------+---------+------+-------------------+--------------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+----+------+--------------------------------------+------+---------+------+-------------------+--------------------------------------------------+
| 67 | ubb | ltf1636.tam.us.siteprotect.com:44306 | ubb | Query | 35 | Repair by sorting | /*!40000 ALTER TABLE `ubbt_POSTS` ENABLE KEYS */ |
| 68 | ubb | localhost | ubb | Query | 0 | NULL | show processlist |
+----+------+--------------------------------------+------+---------+------+-------------------+--------------------------------------------------+
From what I read, repair by sorting is MUCH faster than repair by keycache. Keycache kicks in when sorting fails due to lack of resources. Hopefully this works