I'm having the same problemon by JB iPod running 4.3.3. Springboard Enhancer kicks icons off your dock thing on the bottom if the screen when you even just drag another icon past it. You can still search for, find and use the apps but the icons are nowhere to be found. I successfully got my icons back yesterday, but now I can't do it again! Poof does not work, whether in Sbsettings or on it's own. I tried dock too. No luck.
I may have to just restore it and be sure not to download Springboard Enhancer again.