How to undo a restore?
I transferred some podcasts from iTunes (8.0.2 (20)) to my iPhone (2.2.1 Build 5H11) \[this is on a MacBook Pro running OS X (10.5.6)\] earlier this evening. When it finished that sync/transfer, my iPhone restarted and then restored from whatever iTunes had saved. I now have lost everything from February 23, 2009 until today. I need to know how to undo that restore, or retrieve all of my lost data.
MacBook Pro, Mac OS X (10.5.6)