A rare, but catastrophic technical problem (crashed database table) coupled with one of the only times I've been without full, reliable internet access resulted in some pretty bad problems this weekend. These manifested themselves in non-working browse and search pages as well as skin download counts and rankings resetting to zero.
The problem has been fixed, and I think there was no data loss. Thanks to the many, many people who reported this problem -- and if you notice any more, please don't hesitate to contact me.