I chose the wrong WP version when I created this topic, it’s actually 3.0.1. Plugins are Akismet (deactivated) Hello Dolly (deactivated) and wordpress-importer (I’ve tried both network activating it and activating it on only this one blog).
I’ve just been informed that it’s only happening on our test site, our live site importer is working fine, so I think it may be an environment issue. Sorry for the forum pollution!
