phpMyAdmin version 3.4.1
Browser: Google Chrome: 13.0.782.112 m (have noticed on many older versions too)
"Uncaught TypeError: Cannot read property 'document' of undefined" - which is shown to occur in common.js line 2 mainly and also sometimes 7 (I will get another instance of this each time i try and select another database).
I've noticed this has been a problem in google chrome for quite a while in various different versions of the browser and phpMyAdmin. I've never had problems with other browsers so I'm thinking it may be a bug in chrome, but it does seem odd that other drop down boxes do reload/change things without errors in other areas of phpMyAdmin.