Erica Sadun has tried Pwnage for iPhone firmware 2.0.

If you're a casual jailbreaker, or looking to simply unlock your iPhone, you probably want to wait for another week for the bugs to be ironed out of the system and the software to become more stable.

» Read "First Look: Pwnage for 2.0" on TUAW

Given what she is saying above, I think I'll wait a week or two before I jailbreak my iPhone 3G. Since the apps I'll want to run probably aren't even ready yet, I'm in no hurry (at least for a few weeks) to jailbreak. I've also thought about waiting until after Apple releases the first bugfix firmware, so that I can get that right away and not have to wait for it to be tested with jailbreak.

No rush over here. I'll let Erica and others test it out and see what Apple does with the first update. Then I'll be able to make a more informed decision.