After a) trying to upgrade from 2.6 unsuccessfully, I cleared out the wordpress directory, installed a clean edition of wp 3.3.1, created a new mysql database, edited the wp-config.php and uploaded, established a database connection and logged in ok. Only - once logged in there is nothing there, just a blank browser screen. No dashboard. Using FF 9.0.1. Any help welcome. It seems this is a bit of a common problem as I noticed a previous poster had the same issue although he arrived at it via a different route from me.