I have used the night updating my ubuntu install (update-manager -d),
but sadly the problem is still a problem. I just moved about 1gb file to
my usb pen, and the speed started at 8 mb/sec and ended at 1.5 mb/sec.
The usb pen is a Kingston DataTravler 100 8GB. The computer is a
ThinkPad T61.

$ lspci | grep -i usb
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #2 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #1 (rev 03)

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3-years old ehci usb hardware not recognized
https://bugs.launchpad.net/bugs/192234
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