Explorer won't open a drive! Help!

[Guest]

I tried to open the e: drive from "My computer", and the Win 2000 Workstation
got hanging. That drive is a second NTFS partition on the single HDD I got on
my PC.
I rebooted again and again and even unplugged my PC from power. Still the
same thing.
One interesting thing is that even when my computer was hanging, a colleague
could access my e: drive through the network.
I finally checked my drive for errors and nothing wrong was found.
Then I defragmented the drive.
And I finally succeeded to open that drive using the explorer.
It appers to be something that has to do with the Windows explorer. Why?
What am I to do to avoid this?
And figure that I've installed all the "critical updates" from MS!

 

[Guest]

One more thing I suspect.
When looking in the event log I found some warning that Norton antivirus
couldn't scan some files. Those files were in a compressed folder, and,
moreover, they were .zip.
Could it have something to do with Norton?
After I checked the drive for errors and defragmented it not only I got the
explorer to do its job, but I also scanned those offending files without any
problems.