Hi, I've noticed twice that Finder does not allow me to delete some files saying that it can't delete them because they can not be found... Rebooting the laptop solves the problem and the files are still there and can be deleted. Next time it happens I'll try a deeper analysis, i.e. trying to move/read/copy them from shell or something else.. The laptop is a new MBPr 15" Core i7 2.3Ghz with 512 SSD. Have you ever experienced this issue with Mavericks 10.9.0?