Good to see Mikrotik support knows the product so well.
Thank you Surfer Tim. Great info.
actually SurferTim is a user of this forum as you are.
Yes I am, but I think the OP was being a bit sarcastic about this topic:
http://forum.mikrotik.com/t/how-do-you-clear-a-global-variable/25265/3
I received a karma boost for that with a link to that topic. That is how I know what the OP is talking about.
@janisk: BTW, the dhcp server is still malfunctioning, but you know that already. 
http://forum.mikrotik.com/t/dhcp-server-renew-challenge/66256/1
@JAza: Thanks for the karma boost! 