I forgot to mention that this specific fix apply to a version of pcmanfm not available in the Ubuntu repository. It actually do nothing on the pcmanfm in the Ubuntu repository (0.5.2), as it export a prefix which is only used in a newer version. But if people use the new version (0.9.X), it should bring them the fix.
Jean-Baptiste,
I forgot to mention that this specific fix apply to a version of pcmanfm not available in the Ubuntu repository. It actually do nothing on the pcmanfm in the Ubuntu repository (0.5.2), as it export a prefix which is only used in a newer version. But if people use the new version (0.9.X), it should bring them the fix.