Just a word of warning, be carefully with Kate 2.0 beta because it caused me and a few others to SWOD when you uninstall it.
EDIT: Reznor9 from iPod Touch Fans has found a solution,
SSH or use Total Commander and go to private/var/mobile/Library/Preferences and rename com.springboard.plist to com.springboard.plist.bak.
Wait a bit and it will then work.
If you dont have SSH on or Total Commander at all, then I’m afraid, you will need to restore.