http://www.intel.com/software/products/vtune/vlin/ says it works on fedora for UP and SMP kernels "2.4.22-*.nptl (Red Hat Fedora* Core 1) (some limitations)" Anyone use this software? Know what they mean by "(some limitations)"? Has it significantly helped performance on any of your projects? I'm trying to download the Trial but it says I have to wait one business day for some conformation e-mail. So I'm hoping for some stories.