Network Share file list refresh delays?

Hi,

I have a Windows 2003 R2 Enterprise server that is acting as a file

share server, with several shares that clients mount.

The problem I am currently seeing is files are being put onto the

shares, but the clients are not seeing them - they exist locally, but

clients are not seeing them in Windows Explorer, even after a forced

refresh of the folder. Eventually the clients will catch up and the

folders will appear to them, but often thats inconvenient timewise.

Has anyone experienced this before?

Cheers

Richard