I got the same problem, any solution yet ?
This is related to the Xerox Print Driver. The only way to stop it on a Xerox printer is to check the box "Do not show this again". When this is checked, a setting is saved in the registry.
This may be used to deploy a fix for all users to get rid of this message:
1) Check for Xerox Driver Version 5.0 - do this be searching for the V5.0 in the registry (regedit.exe).
2) Copy the data below to a text file and rename it to Fix.reg.
3) Open Fix.reg and merge the settings into the local registry.
4) Reboot your workstation.
*** Copy the text between the *** comment into a file ***
Windows Registry Editor Version 5.0
*** End of Copy ***