No issues here. I think the solve back when was to delete the zone files if it's a specific zone. I always just copy my .ini files and delete the whole directory and do a fresh install, then add the .ini files back once a year or so. I haven't had any problems in along time since I started doing that. Could be excessive temp or log files. A lot of different causes. Easiest to just fresh install and clean everything up. Delete any .ini files for toons you no longer have etc to make it even cleaner. Make sure you install it to the same place so you don't have to redirect any outside EQ programs to something new.
Level 120 Druid, Level 120 Enchanter, Level 120 Paladin, Level 17 Shaman, Level 11 Rogue
Drinal - Maelin Starpyre Server