Well, if you jailbreak your phone then you’re going to want to jailbreak it again. This time up to 4.3.2. Apple released the update last week and they did not fix the hole that i0n1c found.
As always, if you’re trying to preserve your baseband, wait until PwnageTool is updated. Muscle nerd said it should be released sometime this week.
You can get the redsn0w update here