I updated my Fascinates this afternoon and am seeing same issue.
Seems to be related to some new 'Media sync' option.
I did some playing around and the following seemed to let me 'mount'
the phones as before. ( But I dont like it. )
Hoping for some direction from Verizon tech on
a) what is media sync ?
b) how do I turn off permanently If I dont need or want to use it?
Unplug phone from usb cable.
Then on Phone... Menu...Settings..USB settings
Change to ' Ask on connection'.
then press home button.
Plug in USB cable.
When prompted...Press 'Mass storage'.
Now wait...wait..wait. Took about 30 to 45 seconds.
Annunciator bar should have usb symbol. Drag it open.
Press usb connected....Press Mount..
My laptop now recognized the SD card on E drive.
Copy files as usual.
When done...Open Anunciator bar and 'Turn Off' USB storage.
Sometimes when connecting I would see 'Media sync connecting'..press to Cancel. So I'd cancel.
Research needed on this. Perhaps some new features ???
I'm on the phone with VZW now. After some searching, Cathy came back and told me that it is a known issue and although it didn't have a correction time ETA, that they would fix it on the next release. I told her we waited months ofr this release and that was unacceptable. She's checking further now.
It seems that after the upgrade, when you connect via USB the phone presents itself as a CD-ROM drive. On this are drivers for some new (surely lame) Verizon software to do media syncing. On some PCs the auto installer will run and if you say "no" the device associated with the phone with switch to USB mass storage just like it used to. If the auto installer doesn't run you can start it yourself and say "no". Or you can wait for it to timeout, or so it seems. You don't have to set your USB settings to "Ask on connection". Once it switches to the mass storage device just hit "mount" on your phone like before. If you have file explorer running, you can see the device under "my computer".
Stupidly I said "yes" the first time I saw the pop-up for the new software. It didn't install and I couldn't kill the process - I had to power cycle. Also, MAC users are SOL unless things work after the installer times out. There is absolutely no reason to do this. The new software could have been placed in an app or made available on the Verizon site for people to download if they wanted it. The software is for some new thing that Verizon charges money for - big surprise there!!