Well, welcome to the world of Yahoo Answers!
Anyways, I have a friend who jailbroke his iPhone and he screwed up his phone. So for days he couldn't get it to work so he finally resorted to restoring his phone and, of course, he did the jailbreaking again. Only that time he did it the right way. Well now it works just fine and he's having too much fun with it. Adding all sorts of weird stuff on there. Pretty much, everytime we talk he always has something new to tell me. Haha.
So, I mean, it's not necessarily a bad idea, but you just have to be careful on how you do it. Restoring it isn't fun because you'll lose practically everything and it's like starting from scratch.
Remember though, the new iPhone is coming out on June 15...but I'm sure that's tentative!
Good luck! =]
Oh and P.S. If it's a company phone, don't do it!!!! Then you'll just get in trouble and then we'll never see you on Yahoo Answers again. Not cool. Haha =]
