Recently Dev Team released a PwnageTool it is an update to 188.8.131.52 version. It simply fix the problem of iPhone 4, 3GS side switch vibration. Everyone faces this problem after jailbreak IOS 4.3.3 with this tool.
Redsn0w 0.9.6RC15 and PwnageTool to 4.3.3 both were released for jailbreak untethered iOS 4.3.3. These tool actually got a bug and create problem of vibration with iPhone 4, 3GS side switch. Now these tools are updated and new versions are ready to download.