Thanks for the tip.
By disabling FastRebbot option, I can now shut down my computer properly, but the restart problem still exists.
I am using AVG 6.0 Antivirus System on my machine.
I noticed another peculier problem, which I do not know if it is related to current problem.
I have Yamaha OPL3SaX soundcard, which was working nicely with Win95. After upgrading to Win98, the Win98 installation picked up a different driver for the card. Some times when I start the machine for the first time in a day, the sound card does not work though the volume control (systray) is visible/available on the taksbar. AND AT THIS STAGE I CAN SHUTDOWN AS WELL AS REBOOT MY MACHINE. After rebooting, the sound card works fine, but now restart hangs.
Any suggestions please?
Regards.