I am running Cydia on my iPhone 3G 3.1.2 and before today Winterboard was working perfect. Today I was running a theme and when I tried to take it off, it didn't respring. I uninstalled Winterboard and the theme went away. Now when I try to run a theme, I check it in winterboard, and when I exit, it does not respring. I've tried uninstalling and re installing Winterboard and mobile substrate and it still doesn't work. Has anyone else had this problem before? Any suggestions?