Thumbnails not working

[Paul]

I am trying to view thumbnails on certain folders with pictures. in a folder
with 20 files,half come up with thumbnails. i know it's not the files,
because each time i refresh, it's different files that have thumbnails or
are missing thumbnails. it can't be a performance issue, because i'm running
a pretty fast computer.

any help is appreciated,
Thanks,
Paul

 

[Paul]

I just realized this only happens when browsing folders over the network.
but this is a brand new computer (3 days old) which replaced an XP machine,
which this did not happen on.
the connection is very fast, so it shouldn't be that.
i am running Symantec Endpoint Protection corprorate v11, provided by my
employer. the firewall in symantec is disabled, as is the windows firewall,
as i have a dedicated hardware firewall. but this is the same setup as the
previous XP machine.

thanks,
Paul

 

[Paul]

I am running the same version of SAV on an XP virtual PC running on this
same machine, and the thumbnails work fine, and quick.
i just noticed that when opening a folder, on some files, the thumbnails
will appear, THEN DISAPPEAR!
this is making it very hard to work with my graphics files.