Thanks, hugobosslives & Pondlife,
I reformatted the EXT3 partition in Recovery, and your'e right hugobosslives, it does take 3-4 times longer than simply formatting the SD card.
Pondlife, the EXT partition, is a Linux partition, the rest of the SD card is Fat32, which is great when you want to mount the SD card on the desktop. But that's where the problem lies with having only one partition, any apps on the Fat32 partition will no longer be available to the phone. That is where the Linux EXT partition comes in. If your ROM is A2Sd compatible, then it will automatically see the EXT partition and move or install suitable apps to that partition. The EXT partition will not mount on the desktop when you mount the Fat32 partition, so consequently anything on the EXT partition will always be available to the phone.
Phwew, that took longer to explain than I thought it would. Long story short; having an EXT partition means your phone will have more internal storage for essential apps.
Anyway, thanks to you both. I'm off to enjoy CM7.
Edited by Anil k Solanki, 07 July 2011 - 03:53 PM.
Galaxy NEXUS with a side of Jelly Bean.