WIN98SE GETS SPOOL32 ERROR

TOSHIBA LAPTOP WITH WIN98SE PRINTING TO NETWORK PRINTER(HP4 LASERJET) FROM EXCEL AND WORD GETS SPOOL32 ERROR. PC MUST BE RE-BOOTED IN ORDER TO CONTINUE PRINTING. PROBLEM DOES NOT OCCUR EVERY TIME. HAVE INSTALLED WIN98SE UPGRADE, DELETED AND RE-ADDED PRINTER ON PC.
ANY SUGGESTIONS APPRECIATED… THANKS.