Very strange...

I have been using RC for a couple of years now - great - recommend it to everybody I come into contact with in my FS circles.Today, after taking off from EGCC for HEGN I followed instructions on heading, altitude and after passing 10,000 feet increased speed from 250 to 280 kts as indicated in the Werner Schott (B757) checklist that I have used for ages.I was then chastised and instructed to reduce speed to not more than 250 kts!After passing through FL150 I again increased speed and received a further reprimand!This continued on up to FL310 - at that point I gave up and shut down :( The only change (recent) has been the installation of REX - having said that I have flown twice with REX and did not have this problem.Running FSX etc on XP-Home/SP3 - other specs in sig.Ideas, please.Ken.EDIT:....................Cancel the above - found it!After I pressed "send" for the above I had a thought to check the General Settings in RC.A "typo" with speed restriction of 250 kts set at 70,000 feet :( :( The thing is - I can't remember doing that - and why would I B) Still a brilliant product - shame about the "operators" B)