Usage statistics not showing page hits

[Carrie]

I have usage logging set up on our server, and I used to
be able to view the daily page hits in the Frontpage
usage statistics report. A couple weeks ago, our server
went down due to a power outage, and ever since then the
reports are incorrect. The logging is still active, and I
can see the total number of hits on a given day in
the "Daily Summary" report, but on the "Daily Page Hits"
report, all the pages have a hit number of zero.

I reviewed the ISS logging settings, and they seem to be
set up correctly.

Any thoughts?

Thanks.