I did the test by uninstalling the MTP driver for my x series. and It worked much faster and plus
I can defragment it now and shows with a drive letter.
The good news THE YEAR TAG SHOWS ON MY PLAYER
windows PC, windows 7 ultimate, @ 2.40 GHz, enteprise type laptop (DELL Latitude E6400), walkman X series NWZ X1060 Mexican Model, transferrred amount of files 300 MB, 40 files.
MTP: took 2.5 minutes and a 40 second DB refresh
UMS: 40 seconds and DB refresh time of 1 minute aprox.
How I did the change using win 7?
a) go to control panel and choose device manager
b) under portable devices, click the '+' to expand and right click WALKMAN and choose Update Driver.
c) Click on Browse My computer for Driver Software
d) Click on Let me Pick from a List of Drivers on my computer
e) Click on the UMS or USB driver and you're done!
* I recommend that you first click uninstall on the right click-menu to unistall the MTP driver.