Originally Posted by meatwad
Had the same problem. Mine had got down to around 8MB, I was already rooted. Checked all the caches and app sizes and the math didn't add up. I did factory reset and installed all of the exact same apps. I now have 40MB free. Oh yeah I'm running Evil Eris 3.0 if that matters to anyone.
I have read about problems with the App2Sd on EE. I have been using White Widow and the A2SD works well. Perhaps try another ROM. The card must be partitioned before it works properly (unless you're using a 2.2 based ROM).