After the Jailbreakme.com website went live, I believe I was one of the first few to jump on board. I wanted to jailbreak my new iPhone 4 so I could get back to the fun loving I had with my 3G with WiFi sharing/tethering and SBsettings, etc.

I remembered seeing Wi-Fi Sync on YouTube and TUAW, but I also knew that it didn't get approved by Apple, so I thought I'd add that to my list of Jailbroken Apps to check out.

After doing some further "jailbreaking," I figured I've probably screwed up more stuff that I needed to, so I wanted to do a restore. Haha, well that didn't go so well. The iPhone 4 continuously hung at approximately 60%, and iTunes reported about 99%. I'm not going to lie, I started to freak.

After a Google session and a couple of beers I've determined that the Wi-Fi Sync component on the Mac was the culprit. After running their uninstall script, I was able to completely restore my iPhone.

Cheers to that! I hope this helps someone else who is desperately trying to find the solution.