Well, essentially I moved everything I could to the SD card, and deleted everything I could from memory. Some applications create temp files (like Chatter) and for a variety of reasons they linger. Each app is different, and the filenames are different, so you have to research each file (I use Cleanup from Northglide) to see who it belongs to and whether you can delete it or not. The call database log keeps track of incoming and outgoing calls. After a while it can grow, so I just purge it for everthing but the last few days. There is an option to do that in the log. I also do not keep emails on my Treo. All my email accounts are downloaded onto my PC and a copy left on the server, so when I download with my Treo I can read them and delete them knowing a copy is on my PC. A large email inbox can consume a lot of space. 9.6MB is a lot, almost 50%, so unless there are more apps you want to load, you should be OK. If you start to run out of memory and have moved everything you can to the SD card, its time to start reducing the number of apps. 24MB can only go so far.