YourKit Java profiler observations

I started using YourKit 4.0.7 Java profiler to profile a web application deployed in Tomcat 5 on Windows XP. YourKit is one of several Java profiler offerings and since I'm an IntelliJ IDEA user and these guys previously worked on IntelliJ IDEA, I thought I'd give it a whirl. I'm impressed with YourKit. I only used it to profile memory allocations.