My eggdrop bot use every command more Memory. Especially when I use mysql commands (mysqltcl). I have a script which checks every minute a mysql table. I think the memory give the bot not free. After 1 Day the bot use about 5MB. After 2 Days 10MB and so on.
At the moment I restart the bot every 12 hours. It's not not good but works until I find a way to solve the problem.