When I copy a page and place it with a mouse click inside the same directory, it fails to copy it. I can only copy it by clicking with the mouse on the name of the directory. (On the root level, it moves it instead of copying it, and if you place it at the end, it works.)

It seems that it gets confused about where its root is, because the tomcat.log is also littered with the following error message:

INFO | jvm 1 | 2006/07/15 20:42:50 | ERROR info.magnolia.context.MgnlContext MgnlContext.java(getInstance:291) 15.07.2006 20:42:50 Context is not set, defaulting to System Context

See MAGNOLIA-1000 for a possibly related issue.