This bug was originally marked as duplicate of bug 202651, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 7.2 Beta (Build 201205031832)
VM: Java HotSpot(TM) 64-Bit Server VM, 20.6-b01, Java(TM) SE Runtime Environment, 1.6.0_31-b05
OS: Windows 7
Maximum slowness yet reported was 4700 ms, average is 4700
Created attachment 120341 [details]
Fixed in jet-main.
Integrated into 'main-golden', will be available in build *201206080001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Dusan Balek <firstname.lastname@example.org>
Log: Issue #213564 - fixed.
*** Bug 207558 has been marked as a duplicate of this bug. ***