This bug was originally marked as duplicate of bug 197270, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 7.0.1 (Build 201107282000)
VM: Java HotSpot(TM) Client VM, 21.0-b17, Java(TM) SE Runtime Environment, 1.7.0-b147
OS: Windows XP
muellermi: opening project
Maximum slowness yet reported was 31403 ms, average is 31403
Created attachment 110330 [details]
This is an old known bug, but true 31s is way to much. But maybe your system was overloaded by something.
*** This bug has been marked as a duplicate of bug 196189 ***