They are specially annoying when I need to upload to the server a web solution.
Is there a way of configuring SVN to create the _svn folders outside my working directory
The really dirty way in Windows: Create a copy of your project, open Explorer, navigate to the directory the copy is in, and do a Find for everything ending with _svn. Once the search is done, select all and hit Delete.
Yuck! But it works really well.