yesterday, four of hundreds of my RB750GL NAT configuration went missing, i have been checked the logs but none of them can be used as clues, i began investigating of it since yesterday and still can't find what was the problem.

few days ago before the problem occurs, i added a few dst-nat configurations, but i think it won't be any problem.

is this hardware problem or i missing something?

regards
Semangka

RouterOS version?

update 15 January 2014 :

now the problem increasing, 8 units of my the RB750 also have the same issues. They are :

• RB750 v.5.22
  RB750GL v.5.20
  RB750GL v.5.24

I restore them manually, and they got working normally again, but still have no clue why are they still happening.

my guesses are :
-bugs
-hacks (but i don't know who was hacking them)

ps : i am sorry for double posting thread

Rules disappeared after power outage?

No,

i know sometimes after power outage RB750 configurations may got missing too, it happened to me before, but it was not like that. That was not the issue

NAT Configurations missing, just like that. Randomly

As per 22 Jan 2014 the issue increases to 17 case