There were some problems with the server last night. One of the plugins we had for the blog software has bloated down the whole server (no kidding). The system administrator helped us on narrowed down the problem (Thanks Jeff). Popular posts sidebar is disabled for now until further refinements.
Feeds will need some time for the server to refresh again. Apologies for any inconveniences.
Update: Feeds are okay now. Services like bloglines may still need time to refresh itself.