If you were one of those users affected by the issue, you can simply run RedSn0w 0.9.10b2 on top of your current jailbreak.
From the Dev Team blog:
The b2 version of redsn0w includes the launchctl-related fix by @planetbeing as mentioned by @saurik here and here. As usual, you can just re-run redsn0w in jailbreak mode over your existing 5.0.1 jailbreak (even a PwnageTool one), making sure to de-select “Install Cydia†if you do. Always be sure to do a controlled “slide to power off†shutdown of your device before running redsn0w.
RedSnow 0.9.10b2 for Windows.
RedSnow 0.9.10b2 for Mac.