Connection to ISP just stops.

Hello,

Running a Netware 5 server with WindowsXP workstations (with most updated
clients). Halfway through the day nobody was getting e-mail or internet
access. Called ISP, all good. Call Telco, all good. What would cause
all workstations to drop access. My work-around solution is to down the
server and restart, which clears the problem. I'm perplexed.

Thank you in advance for your time.

Chris
cam@nuvidia.com