Same thing, but device was connected BEFORE power-up:
patrice@nc6000:~$ lsusb
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 008: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem / E270 HSDPA/HSUPA Modem
Bus 001 Device 007: ID 046d:c019 Logitech, Inc. Optical Tilt Wheel Mouse
Bus 001 Device 006: ID 076b:a022 OmniKey AG CardMan Smart@Link
Bus 001 Device 005: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 004: ID 045e:0728 Microsoft Corp. 
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
patrice@nc6000:~$
patrice@nc6000:~$ lsmod
Module                  Size  Used by
ppp_deflate             3726  0 
zlib_deflate           19266  1 ppp_deflate
bsd_comp                4791  0 
ppp_async               6778  0 
crc_ccitt               1351  1 ppp_async
binfmt_misc             6599  1 
radeon                828445  2 
snd_intel8x0           25632  2 
snd_usb_audio          86480  1 
snd_ac97_codec         99227  1 snd_intel8x0
ac97_bus                1014  1 snd_ac97_codec
snd_pcm                71475  3 snd_intel8x0,snd_ac97_codec,snd_usb_audio
snd_hwdep               5040  1 snd_usb_audio
snd_usbmidi_lib        17413  1 snd_usb_audio
ttm                    56633  1 radeon
snd_seq_midi            4588  0 
joydev                  8767  0 
snd_rawmidi            17783  2 snd_usbmidi_lib,snd_seq_midi
drm_kms_helper         30200  1 radeon
option                 13133  2 
snd_seq_midi_event      6047  1 snd_seq_midi
pcmcia                 35973  0 
usb_wwan                9953  1 option
snd_seq                47174  2 snd_seq_midi,snd_seq_midi_event
usbserial              33100  6 option,usb_wwan
usbhid                 36882  0 
snd_timer              19067  2 snd_pcm,snd_seq
uvcvideo               55847  0 
drm                   168092  4 radeon,ttm,drm_kms_helper
snd_seq_device          5744  3 snd_seq_midi,snd_rawmidi,snd_seq
ppdev                   5556  0 
hid                    67742  1 usbhid
usb_storage            40172  1 
intel_agp              26694  1 
videodev               43098  1 uvcvideo
v4l1_compat            13359  2 uvcvideo,videodev
yenta_socket           21518  0 
pcmcia_rsrc            10566  1 yenta_socket
parport_pc             26058  1 
pcmcia_core            14657  3 pcmcia,yenta_socket,pcmcia_rsrc
i2c_algo_bit            5168  1 radeon
video                  18712  0 
snd                    49038  16 snd_intel8x0,snd_ac97_codec,snd_usb_audio,snd_pcm,snd_hwdep,snd_usbmidi_lib,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse                59033  0 
output                  1883  1 video
soundcore                880  1 snd
snd_page_alloc          7120  2 snd_intel8x0,snd_pcm
serio_raw               4022  0 
agpgart                32011  3 ttm,drm,intel_agp
shpchp                 29886  0 
lp                      7342  0 
parport                31492  3 ppdev,parport_pc,lp
tg3                   123310  0 
patrice@nc6000:~$ 


And NOW, the 3G Key appears AND can connect to the network