Seems to be the same with the latest mainline kernel.

$ uname -a
Linux kjartan 2.6.28-02062810-generic #02062810 SMP Tue May 5 18:51:47 UTC 2009 
x86_64 GNU/Linux

-- Plugged into the docking station usb port --

$ lsusb
Bus 001 Device 008: ID 041e:4052 Creative Technology, Ltd Live! Cam Vista IM
Bus 001 Device 007: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 
4000 V1.0
Bus 001 Device 006: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 005: ID 05e3:0606 Genesys Logic, Inc. USB 2.0 Hub / D-Link 
DUB-H4 USB 2.0 Hub
Bus 001 Device 004: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 
"TetraHub"
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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 003: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
Bus 002 Device 002: ID 03f0:171d Hewlett-Packard Wireless (Bluetooth + WLAN) 
Interface [Integrated Module]
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

-- No video --

$ xawtv
This is xawtv-3.95.dfsg.1, running on Linux/x86_64 (2.6.28-02062810-generic)
xinerama 0: 1440x900+0+0
xinerama 1: 1440x900+1440+0
WARNING: No DGA direct video mode for this display.
can't open /dev/video0: No such file or directory
v4l-conf had some trouble, trying to continue anyway
v4l2: open /dev/video0: No such file or directory
v4l2: open /dev/video0: No such file or directory
v4l: open /dev/video0: No such file or directory
no video grabber device available

-- Plugged into laptop usb --

$ lsusb
Bus 001 Device 007: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 
4000 V1.0
Bus 001 Device 006: ID 0557:7000 ATEN International Co., Ltd Hub
Bus 001 Device 005: ID 05e3:0606 Genesys Logic, Inc. USB 2.0 Hub / D-Link 
DUB-H4 USB 2.0 Hub
Bus 001 Device 004: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 
"TetraHub"
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 002: ID 041e:4052 Creative Technology, Ltd Live! Cam Vista IM
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 003: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
Bus 002 Device 002: ID 03f0:171d Hewlett-Packard Wireless (Bluetooth + WLAN) 
Interface [Integrated Module]
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

-- Video works --

$ xawtv
This is xawtv-3.95.dfsg.1, running on Linux/x86_64 (2.6.28-02062810-generic)
xinerama 0: 1440x900+0+0
xinerama 1: 1440x900+1440+0
WARNING: No DGA direct video mode for this display.
/dev/video0 [v4l2]: no overlay support
v4l-conf had some trouble, trying to continue anyway
Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to 
type FontStruct
game over
libv4l2: warning v4l2 mmap buffers still mapped on close()

-- 
can not use webcam and bluetooth dongle though usb self-powered hub
https://bugs.launchpad.net/bugs/181202
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