If you haven't already done so, definitely do not install version 3.0 of the firmware that was released for Fujifilm's X-Pro1 on 23 July 2013. Fujifilm has pulled the update and announced that there is a malfunction when it comes to recording videos with the new firmware. If you have already installed the upgrade, contact Fujifilm's customer services and they will advise you on the best course of action.
In the UK, the number that you need is 0844 553 2322, or you can email fujitec@fuji.co.uk. Non-UK people can find their relevant contacts here.
Fujifilm is working on a replacement firmware upgrade, but there's no word on when that'll be available.