All of the PDB's are already grouped together in the website Bin folder along-side their respective dll's. Since Asp.Net website are generated on the fly with the aspnet_compiler (thats just how VS does it, alternately i could build it myself but with the same results), the resulting compilation is all put into another folder. Since this can be done over and over, the compiler attempts to be smart, renaming each new dll with some form of uniqueness (like MyFile.akwjedhaajd.dll for all ascx). I would imagine therein lies the problem. fyi, Line-level worked for me this last time i used it, but simply ceased to produce any results after i let the page sit, then tried a refresh. The graph showed activity, but selecting the new activity range, showed nothing at all, this is w/o compliling or anything. (i saw another thread on this somewhere here).