New Install Using 50% More HDD Space

xp pro sp3 and all additional MS updates. New install with the same apps and its at 11.9gig. Previous installs it was 7gig. This is C partition. All my personal files, downloads, favorites, etc are on D partition. Partitions made using the xp pro install disk, just like I did on previous installs. New HDD too, using NTFS just like before. Only extra apps is skype (31.75meg) and I dont currently have Thunderbird installed, but did before.

If I click on an email link it opens outlook, even though it was not installed. I did double check add/remove programs and OE was not checked and it listed 0.0 MB. I then installed OE and after reboot, its checked but still lists 0.0 MB. Most apps listed whether checked or not list 0.0 MB. Some apps whether installed or not installed list sizes over 0.0 MB. Also, under Network Connections there is LAN or High Speed Network~Local Area Connection 3, as before(except for the 3), but now a new Internet Gateway~Internet Connection, which I've never seen before. Its properties listed uTorrent twice and Skyipe twice. Ive had Utorrent installed before, but this is my first time using Skype. Whats Internet Gateway~Internet Connection? If I un-check Skype and or UTorrent(twice), close properties, then open it back up, they are all checked again.