Ubuntu 12.10 install stuck at first step

I'm trying to install Ubuntu 12.10 from a DVD-R disk, and everything is just fine until I get to the first window after clicking Install Ubuntu I checked the box Download updates while installing and also the Install third-party software box.

After clicking next, however, the install just hangs there. I've been waiting for over an hour now and all I see is the mouse cursor showing that it's loading.

What should I do to get past this? Thanks!

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You should probably just hold the power button to turn the machine off, and then retry without checking any boxes. –  mikewhatever Nov 24 '12 at 1:40
I tried that, still stuck at the same spot. –  Josh Clarke Nov 24 '12 at 2:32

Check the md5sum of your downloaded iso, (in windows use http://www.winmd5.com/), get the checksum to compare with from https://help.ubuntu.com/community/UbuntuHashes, if the sums are the same burn the iso on another dvd preferably on a regular dvd and try again. If the sums are not the same redownload ubuntu.

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I re-burend the ISO to a DVD+R and it works perfectly. Thanks for the help. –  Josh Clarke Nov 27 '12 at 3:16
You're welcome. –  jeroen Nov 27 '12 at 20:06

for anyone who is still having this problem, i figured it out.
for some reason the ubuntu LIVE system mounts and uses the swap located on the hard drive in 12.10 :/
here is how to fix it: step 1: open gparted
step 2: locate the partition labeled "swap"
step 3: click "swap off"
step 4: re-try system installation

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