Help please,

I have Maemo 5 update 3.2010.02-8.203.1 ready in app manager.

Evertime i try to install phone says "Not enough memory in target folder" So called it needs 12MB.

I have 33.2MB free in RootFS/1.7GB free in apps and 18GB free in MyDocs.

So if i do need to free up more memory where and what do i delete?