<p>Have you guys had any experiences (positive or negative) by placing your source code/solution on a network drive for Visual Studio 2005 or 2008?  Please note I am not referring to placing your actual source control system on that drive, but rather your working folder.</p>

<p>Thanks</p>

This is usually caused when using a build system like
Apache Ant
that only compiles java files when the java file is newer than the class file.  If a method signature changes and classes were using the old version things may not be compiled correctly.  The usual fix is to do a full rebuild (usually "ant clean" then "ant").
Sometimes this can also be caused when compiling against one version of a library but running against a different version.