usb problem




I have a windows xp professional Service Pack 3 computer. When users
connectsa usb jump drive the hardware wizard asks for an
administrator password to install the usb device. It did not do this
is in the past, but it does so now.
In the local security policy the users are allowed to "load and ubload
device drivers"

any help greatly appreciated

below is an exerpt from c:\windows\setupapi.log

[2008/07/31 14:09:41 812.3 Driver Install]
#-019 Searching for hardware ID(s): usb\vid_0718&pid_0462&rev_0110,usb
#-018 Searching for compatible ID(s): usb
#-198 Command line processed: C:\WINDOWS\system32\services.exe
#I022 Found "USB\Class_08&SubClass_06&Prot_50" in C:\WINDOWS\inf
\usbstor.inf; Device: "USB Mass Storage Device"; Driver: "USB Mass
Storage Device"; Provider: "Microsoft"; Mfg: "Compatible USB storage
device"; Section name: "USBSTOR_BULK".
#I023 Actual install section: [USBSTOR_BULK.NT]. Rank: 0x00002000.
Effective driver date: 07/01/2001.
#-166 Device install function: DIF_SELECTBESTCOMPATDRV.
#I063 Selected driver installs from section [USBSTOR_BULK] in "c:
#I320 Class GUID of device remains: {36FC9E60-
#I060 Set selected driver.
#I058 Selected best compatible driver.
#-166 Device install function: DIF_INSTALLDEVICEFILES.
#I124 Doing copy-only install of "USB\VID_0718&PID_0462\07841921055B".
#-011 Installing section [USBSTOR_BULK.NT] from "c:\windows\inf
#W239 The driver signing class list "C:\WINDOWS\INF\certclas.inf" was
missing or invalid. Error 0x8e5e0226: Unknown Error. Assuming all
device classes are subject to driver signing policy.
#E358 An unsigned or incorrectly signed file "c:\windows\inf
\usbstor.inf" for driver "USB Mass Storage Device" blocked (server
install). Error 0x8e5e0226: Unknown Error.
#E122 Device install failed. Error 0x8e5e0226: Unknown Error.
#E157 Default installer failed. Error 0x8e5e0226: Unknown Error.

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