Ok - checked again, and we still get the same problems… it’s not stricly a script, just a text file for firewall rules.
These are the rules applied:
http://wiki.mikrotik.com/wiki/Dmitry_on_firewalling
Copy & paste, and you’ll see jump rules not working properly. Copy & apply the invalid rules, and they become valid, but won’t necessarily stay that way - sometimes up to 20min before changing back to invalid state.