Hm, what happens if you modify /usr/sbin/grml2ram to use "Inactive" instead and
what happens if you drop the check overall?
Because I'm not sure that "Inactive" would really help, example output from one
of my systems:
# grep MemFree /proc/meminfo
MemFree: 3568244 kB
# grep Inactive: /proc/meminfo
Inactive: 2803648 kB
# free -m
total used free shared buffers cached
Mem: 15784 12357 3426 0 1733 5297
-/+ buffers/cache: 5326 10457
Swap: 2045 94 1951
#
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