svchost.exe_Net Driver HPZ12 errors

I have an HP 7410 AIO printer connected wirelessly to my Vista Ultimate
desktop. About every third week I come in a see all the printer lights
flashing. When I go to Reliability and Performance Monitor I see
svchost.exe_Net Driver HPZ12 has failed several times. I have the latest HP
driver and patch (to keep it from rendomly uninstalling the printer). I also
have the patch that a Microsoft MVP gave out on the forum to correct the
duplexer from always printing upside down (seems like something HP might have
fpound in QC of the software). Everything works great until this happens. HP
has no clue so I thought I'd try here for a suggestion.