Ummm... What's a SP/ARWL? SP = Season Pass? I have about 40.
AR?
WL = Wish List? Perhaps another 10.SP = Season Pass
ARWL = Auto Record Wish List
The numbers you've listed are around the range that other people complain about their TiVo's becoming sluggish, I don't know since two of my TiVo's have a cachecard and the third has only 7 SP's. If your not thinking about replacing the TiVo in the next year with a newer model I would think about getting a cachecard
http://www.9thtee.com/tivocachecard.htm with even 256 megs of ram it helps.