"initializing folders", how to edit network delay?

As anyone figured out how to edit ( I assume through a registry edit?) the

time out/delay in office when you are trying to open a file and get this

"initializing folders" dialog box that take forever to get rid of? I know

it is because I have disconnected network drive attached that I need to

delete but can anything be done about the time it takes to get rid of the

message?

Thanks