I have the same problem. Sony Ericsson w350. Stack trace is:
Aug 18 17:45:46 vasyas-laptop kernel: [ 232.925297] usb 5-1: new full speed
USB device using uhci_hcd and address 2
Aug 18 17:45:46 vasyas-laptop kernel: [ 233.159823] usb 5-1: configuration #2
chosen from 1 choice
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.254302] cdc_acm 5-1:2.1: ttyACM0:
USB ACM device
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.256987] usbcore: registered new
interface driver cdc_acm
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.256991] cdc_acm: v0.26:USB
Abstract Control Model driver for USB modems and ISDN adapters
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257029] *pde = 00000000
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257040] Dumping ftrace buffer:
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257043] (ftrace buffer empty)
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257045] Modules linked in:
cdc_wdm(+) cdc_acm aes_i586 aes_generic isofs udf crc_itu_t binfmt_misc vmnet
ppdev parport_pc vmblock vmci vmmon input_polldev sbp2 lp parport joydev
snd_hda_intel snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss
snd_seq_midi snd_rawmidi arc4 snd_seq_midi_event ecb snd_seq snd_timer
snd_seq_device pcmcia iwl3945 mac80211 snd soundcore led_class yenta_socket
rsrc_nonstatic video iTCO_wdt nvidia(P) intel_agp pcmcia_core output
iTCO_vendor_support snd_page_alloc pcspkr psmouse cfg80211 agpgart serio_raw
dcdbas usbhid ohci1394 tg3 ieee1394 fbcon tileblit font bitblit softcursor
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257094]
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257097] Pid: 4592, comm: modprobe
Tainted: P (2.6.28-14-generic #47-Ubuntu) Latitude D830
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257101] EIP: 0060:[<f7ee25f5>]
EFLAGS: 00010286 CPU: 0
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257104] EIP is at
wdm_probe+0x165/0x410 [cdc_wdm]
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257106] EAX: 00000000 EBX:
00000800 ECX: f7ee6600 EDX: f3e37e00
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257109] ESI: f3db66a5 EDI:
f3ee6c00 EBP: f203dcf4 ESP: f203dca8
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257112] DS: 007b ES: 007b FS:
00d8 GS: 0033 SS: 0068
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257118] f203dcb4 c01cfa60
f25c8d70 f203dcd8 c020c3c6 f3e37e00 f3e37e1c c020bc0b
Aug 18 17:45:47 vasyas-laptop kernel: [ 233.257329] ---[ end trace
34e5c4cce2551bb2 ]---
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mobile phone usb connection crashes
https://bugs.launchpad.net/bugs/333018
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