I have noticed two sudden problems with Finder on my MBP 15" Retina, running OS X 10.10.3 (Yosemite): 1. When I drag n drop files to move them, the system copies them instead of moving them. Very annoying. 2. When I move a file to the trash, it does always ask me for my password. Same when I empty the trash. Again, very annoying. I ran the disk permissions repair and still encounter these issues... Any idea would be welcome!