WD My Passeport ejected by itself

Since I have updated my system to Maveric10.9 on my macbook, WD My Passeport is ejected by itself, at least once a day. Does somebody have noticed the same problem?

Hi, try running a test with Disk Utility to rule out any possible hardware problems, if the test completes successfully try using another USB cable. Avoid using USB extension cables or USB hubs, since these might cause power inconsistencies. 

How to test a drive for defects or problems on a Mac