I'm using WP 2.7.1 and selected the automatic upgrade option for WP Mobile from version 3.0 to 3.0.1. The upgrade appeared to process normally, but then an error message appeared on the plugin screen that "WP Mobile is incorrectly installed. Please check the README." Despite being active, the plugin does not appear to be functioning.
I was unable to locate information about this issue at the link provided (may be there, just couldn't find it) and deactivated the plugin. For the next two days, there were two updates to 3.0.2 and today to 3.0.3, which I thought may have something to do with this, but I am currently still experiencing the issue.