Same for me, too. Reproduced in 12.04 with Huawei E1750. Fix from comment #18 is worked for me, too.
usb-modeswitch version 1.2.0+repack0-1ubuntu1
$ uname -a Linux io2 3.2.0-11-generic #19-Ubuntu SMP Wed Jan 25 22:03:06 UTC 2012 i686 i686 i386 GNU/Linux
Same for me, too.
Reproduced in 12.04 with Huawei E1750.
Fix from comment #18 is worked for me, too.
usb-modeswitch version 1.2.0+repack0- 1ubuntu1
$ uname -a
Linux io2 3.2.0-11-generic #19-Ubuntu SMP Wed Jan 25 22:03:06 UTC 2012 i686 i686 i386 GNU/Linux