Sysvol Staging Area

I have a network with 5 separate sites w.Dc w/ global catalogue,ad,dns,dhcp at each site…all W2K. The DC at site 1 stopped replicating because it is full. 2 of the othe sites have done the same but their data in the staging areas are different data and different sizes. On the other 2 sites the staging areas are empty. I can’t do a registry tweak as suggested by Microsoft. The amount is almost a gig on site 1 and a little less on the other 2. Can I delete the entire staging area at each site and start again? It seems as if it is trying to replicate data upon data. This problem already crashed one of my servers a week ago so I can’t ignore it.

Thanks