Here is some tips for you guys to possibly get it working for you.
IF YOU JAILBROKE PRIOR TO 10/11/10 WITH LIMERA1N JAILBREAK THEN YOU TRIED ONE OF THE BETAS AND YOU SHOULD RETRY TO JAILBREAK AGAIN NOW THAT LIMERA1N IS OUT OF BETA STAGES.
1. THE VERY FIRST THING YOU NEED TO DO IS UPDATE TO iTUNES 10.0.1 OR NEWER OTHERWISE THE JAILBREAK WILL NOT WORK. NOT SURE WHAT ITUNES YOU HAVE THEN UPDATE IT ANYWAYS. GO
2. BACKUP YOUR DEVICE IN ITUNES BEFORE STARTING JUST IN CASE.
3. YOU MUST HAVE A DEVICE THAT IS OUT THE BOX WITH FIRMWARE 3.2.2 FROM THE STORE OR HAS BEEN UPDATED TO FIRMWARE 3.2.2
4. ENTERING IN DFU MODE
DFU Mode is all timing. Some people say count to 10 and some people say watch the on screen prompts. Well the best and easiest way to put your iPad in DFU Mode is to listen to the chimes your iPad makes when it is disconnected from your computer and when it is connected to your computer it will chime as well. When you hold the Home and Power button simultaneously your iPad will reboot itself making a chime when it disconnects from your computer, now when you hear the next chime sound, you will release the Power button immediately when you hear that second chime while continuing to hold down the Home button until the on screen message prompt says "in DFU Mode wait" then release the Home button.
5. AFTER YOU SEE THE MESSAGE THAT YOU HAVE SUCCESSFULLY JAILBROKE YOUR iPAD.
YOUR iPAD will power down automatically and it will NOT automatically reboot itself. You will need to press and hold the Power button for 3 seconds then "Slide to unlock" to view the Home Screen. You will notice there is NO limera1n icon. The reason why is because it is on the mext page so scroll to the secong page of your Springboard (Home Screen) and you will see a White icon called limera1n. Go ahead and tap to open that app. Now tap on Cydia option and make sure you get a green check on the right then tap Install at the top.
Now that Cydia is installed, you can open the limera1n app again and delete limera1n itself so it's not taking up valuable Home Screen Real Estate. If you see a White Cydia icon and/or limera1n icon then you may press and hold the Power button for 3 seconds then Slide to power down. Once your device is turned completely off, you may login again and scroll to the second page to see the Cydia and/or limera1n icon