Disk Utility quit. Missing HD space!

I decided to partition my MacBook Air's HDD so I could do a clean install of Lion and just drag and drop files to it. Simple enough, so I just put a 30GB partition on the drive in the OS Journaled format. Problem is though, during the partitioning - the "Shrinking the disk" step to be exact - it just froze up. I let it go for a while and then I got a message saying "Disk Utility has quit unexpectedly..." That was fine, my computer didn't crash, everything seemed to be okay until I checked my disk space. Turns out the 30GB partition is just counted as used up space on my HDD now. I've tried resetting the SMC and PRAM like I've seen suggested to other people but nothing worked. I'm kind of rattled about this because the MacBook Air SSDs are small as it is. 30GBs of missing space is like 1/4 of my drive. Anybody with any suggestions?

Ahah! That worked great, thanks so much. I was worried I'd have to reformat my entire HDD and my latest TimeMachine backup was from almost a month ago. Wouldn't have been good.

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    <Personal Information Edited by Host>

    Black_Chevy07 wrote:
    I just got a WD My Passport 1TB External Harddrive and i have already backed everything up to it but im still a little nervous about erasing things off the physical drive on my macbook pro since it says my disk utility is out of space an implying i need to erase items.
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    How did you backup and what are you trying to achieve?
    Please post the exact error messages(s) you have received.

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