X230 - WWAN - H5321gw disappears - Fedora 19

[derball2008]

Hello,

my ThinkPad X230 with a WWAN(UMTS-)-module H5321gw runs Fedora 19.
The WWAN-module works nicely, until it somehow disappears from my network manager due to unknown reasons.
I can't reproduce this behaviour. I had my Laptop turned on over the night (without going into standby/ hibernate) and when I checked today, the device disappeared.

Here's my grep networkmanager (from /var/log/messages
https://defuse.ca/b/U9TEesXMTLEsIP7CXZ0Qnk

grep 'wwan'
https://defuse.ca/b/oR0zRjKjxxA4mMtFrtZCC0

running lsusb, rfkill and usb-devices before and after:
https://defuse.ca/b/T0WtqjKvuEt7ZoW201RQSF

It's available after a restart though. Do you think this is a driver problem?

Hope you can give me some advice.

Thanks