I have two similar but not identical ~amd64 machines, and *one* of the two machines is doing something new and strange when I type "mount" with no arguments.
The "bad" machine prints the list of mounted filesystems as it should, but then proceeds to read the partition table on every disk in the machine and writes a fresh version of /run/blkid/blkid.tab . This has the very annoying side effect of spinning up any sleeping disks, including the floppy disk (but not the dvd player, thankfully). I re-installed util-linux, which installs the "mount" utility, but no difference. (The two machines both have util-linux-2.26.1-r1). This new behavior began on April 14, FWIW, and the only package I installed on that machine that day was gentoo-sources-3.14.38, which is why I blamed the new kernel for the new behavior but I discovered since then that it happens with all the old kernels too. I'm stumped. Any ideas?