I did have this problem when my device was new, I downloaded a ROM update and that seemed to fix the problem (or I just got lucky). Might be worth a try!
I've posted the UK address, but you may find it easier to go to a local site (I don't know where you are!). This update is for the X3 and I don't know if it's the same for the X3i. Might be worth checking with Dell before you download!
http://support.euro.dell.com/uk/en/f...X3&st=#systems
Look for Support and downloads.
Jogga