With my website host upgrading to a new server, I took the opportunity to upgrade this site to the latest WordPress MU version 2.9.2. So far, no complication, except that I cannot access my other blogs running within the same database. Mmm… need to check with my hosting company on their upgrade.
Hopefully, the issue will be resolved soon. If not, got to come up with another solution. I hope it does not involve reinstalling WordPress MU and recreating the blogs.
Till then, Live Long and Prosper.