You could use Explorer and see what directory is eating it up?
Then again, you did write XP. Without SP1 that partition would be all of 127GB, then XP eats 10 to 12GB (high end) so that could mean you looked at your remaining space and thought it ate about the remaining amount.
No fix is planned. You'll need a newer XP CD or make one with Autostreamer.
I just added a new 250 gig Maxtor Sata hard drive to my system and when I installed Win XP I noticed that it has used up 108 gig of space. I have never seen this happen before. I tried reformatting and reinstalling the OS several times and got the same result. I did not have this problem when I added the 200 gig Maxtor Sata drive, this is now my additional storage drive. I have a 3.06 cpu, with 1 gig of memory on an AB60N motherboard. I have never seen XP take up more than maybe 2 gig of space. Along with all the other drivers and programs I used to have it only used about 10 maybe 12 gig altogher. Is there something that I am missing? Any help is greatly appreciated.