Whenever I reboot my Netgear R7000, the free nvram is reduced. I schedule my router to reboot every Saturday for stability, and every time it reboots, for no reason the free space on the nvram is reduced. This is quite serious as nvram can only be written a certain number of times after which your router will break.
I'm running Tomato Firmware 1.28.0000 -124 K26ARM USB AIO-64K
Linux kernel 188.8.131.52brcmarm and Broadcom Wireless Driver 184.108.40.206 (r456083)