I had a problem that could be related.
Eclipse started showing folder names as a concatenation of the folder name with other items. Folder named "x" replaced by "xorg.eclipse.jdt.core.javabuilderorg.eclipse.m2e.core.maven2builder"
After studying various possible explanations and / or solutions, I realized that this behavior appeared after I deleted the project folder without checking the "Delete project contents on disk (cannot be redone)" box. When I subsequently re-checked the code from the SVN repository, a folder named "x" was still on my disk, and therefore I suspect that Eclipse created a longer version of the folder containing "x" using other elements from buildSpec.
I fixed the problem by closing Eclipse, deleting both folders ("x" and "xorg.eclipse ..."), opening Eclipse again and checking the project again.
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