Microsoft is changing their IM protocol in a week or two. They released the updated MSN Messenger clients for Pocket PC 2002 and 2003. Note that there are different updates for these two Pocket PC versions. Pocket PC Thoughts reports that the 2002 client requires about 227KB of storage space while the 2003 client takes up about 150KB.
Hmm… Do the recent MSN and Yahoo Messenger(s) changes really improve security?