I tried to run Defrag for about an hour. Turned off screensavers,and all, nad it never did start

It didn't freeze,just didn't do anything.
Also the modem is acting wierd to.It'll be connected,but if I right click to disconnect it stays connected.And sometimes it'll say connected and just not do anything.And only a reboot will fix it too.
I never had one like this.
I'm about to downgrade to Winderz ME