Yes There is a recall for around 50 X3s that were produced between April 17 to June 8. It's a slim chance that yours is defective but if your X3 was produced in that timeframe, I would consider you talk to your dealer and check it out just in case. There is a thread about this. Here is the link.
http://x3.xbimmers.com/forums/showthread.php?t=553724