usbhub.sys crash after last norton download. solution?

win xp sp3 on an old comp.

After last norton update crash has follow:

usbhub.sys address f74f0050 base at f74e7000.datestamp 411070168

Symptom//  comp. access to internet worf ONLY via windowsupdate (probably a different port?)

Firefox, thunderbird, I.E, pale moon, REFUSE TO OPEN/START

Disabling norton don't work. Incident at 11.21 AM the 14 aug.16 Paris time. any idea?