Never mind, I found the cause. A parameter in the wp_config was the problem.
Thanks!
No, I’m not using drop-in db.
The list of plug-ins I’m using is as following:
Akismet
BackUpWordpress
Counter
Fotomoto
Google Analytics
HealthCheck
LiveJournal Crosspost
LJ Users
Thanks,
Yan
Just verified with the host service desk:
*MySQL Server version: 5.0.51
*php-5.2.6
HealthCheck insists the MySQL version 4.1.20.