NFS stuck mounts and frozen panel - faq?

[Roderick Johnstone]

Hi

I'm sure this must be a faq somewhere because google finds so much 
discussion of it over many years, but with no obvious solution.

When an nfs mount stops being available unexpectedly, under some 
circumstances, the panel will freeze.

Does anyone know if there is a way to stop the panel freezes happening 
or which component of KDE is causing it?

Thanks

Roderick Johnstone