Imported 85k hands, but it's "clustering" forever!

This is what my import status window says :
2008/03/12 11:42:33: Import complete. 85,908 hands in 292 files were imported. (0 errors, 0 duplicates)
2008/03/12 11:43:07:
2008/03/12 11:43:07: Clustering...
2008/03/12 12:28:06: Clustering complete.
However, it is right now 5:05pm and it is STILLL clustering! WTF! When I try to close the clustering window it won't let me.
I've been checking the free space in my hdd, and it's still changing (decreasing, suddenly increasing, and decreasing again, repeat).
What's the deal?
2008/03/12 11:42:33: Import complete. 85,908 hands in 292 files were imported. (0 errors, 0 duplicates)
2008/03/12 11:43:07:
2008/03/12 11:43:07: Clustering...
2008/03/12 12:28:06: Clustering complete.
However, it is right now 5:05pm and it is STILLL clustering! WTF! When I try to close the clustering window it won't let me.
I've been checking the free space in my hdd, and it's still changing (decreasing, suddenly increasing, and decreasing again, repeat).
What's the deal?