If anyone gets anything out of what I have been preaching about Enterprise Library, is that it is Extensible. If it does not have a feature that comes out of the box; look at the source code, look on codeplex.com, find other online and offline sources <plug type="Shameless">such as my book</plug>.  I sometimes see a developer raising concerns because the Logging Application Block does not write the text to a log file in a certain way.  If thats the case, use the existing TextFormatter and trace listeners to make the output the way you want it.  The source is there, so why not use it?