We have a public folder and a subfolder in that folder, both containing contacts. When we try to move that subfolder to within the superfolder it takes a long time (both in outlook 2003 and outlook 2007). Is there a way to speed that up? The folders are shared between about five people.
You need to find the bottleneck - have you monitored your exchange server during such an operation? Do you see lots of CPU usage or disk/network IO?