Netscape errors and locking

[S. M. S.]

We have recently encountered a problem on the Internet - our Netscape
browser (2.02 & 2.02 final versions) has been locking up on us if one stops
using the browser for more than a few minutes.  Also, we have been getting
"socket not connected" error messages when attempting to click on some links
or submit queries using a form (one of our patrons got this yesterday trying
to do a search in MorningStar Mutual Funds Online, which had been working in
the past).  
I've not seen this error before a few weeks ago - what does it mean?  Is it
the new replacement for "Failed DNS lookup" which we haven't got for awhile?  

Also, what would make Netscape lockup suddenly - you lose the mouse cursor,
keyboard control, everything.  You can do a CNTL+ALT+DEL but end up having
to reboot.

Anybody got any ideas?

Susan Sansenbaugher
System Operator
Westerville Public Library
ssansenb at delnet.net