Is IIS Debug Diag still applicable moving forward analyzing Windows Server 2008 w3wp dump files. In W2k8, all you have to do is open task manager, right click, create dump file. Using IIS DebugDiag in IIS 6 was handy finding long running requests and bottlenecks.
I'd be curious to hear from others on this.
Steve Schofield
Windows Server MVP - IIS
http://weblogs.asp.net/steveschofield
http://www.IISLogs.comLog archival solution
Install, Configure, Forget