Gparted says i installed in unformatted partition

[steran68]

Ok, heres the whole deal
I wanted to install FC6 on my pc which has windows XP and its not partitioned, when i booted from the Fedora cd, it said that there wasnt enough space to create an ext3 and swap partition, which is not true because i have 35 GB of free space on my HD, and its defragged and all.
So, i downloaded Gparted, i created an ext3 partition and a swap partition, then i installed Fedora on that partition.
Everything went fine, but i used Gparted again and it said that i have a huge unformatted partition and a small ext3 partition, even smaller than the one i created as SWAP.
Fedora is running fine, i havent had any trouble so far, but this is bugging me a lot, should i worry?
I would really appreciate any comment, thanks a lot in advance.

[devils casper]

i think Fedora has created LVM. GParted doesn't support LVM and displaying that as 'unformatted' space. in Fedora, open terminal/konsole and execute this

su -
fdisk -l

post output here.