Can anyone tell me why I get "Pull up" "Too Low" "Terrain" "Sink Rate " etc when I am landing quite normally.Is there a switch to turn off these alarm messages?Thank YouP123

You are getting these from addon gauges with sound enabled. The calculated entry/exit criteria indicates to the gauge that your conditions are incorrect and you get the sound. If the gauge was built for a particular aircraft and you or someone else used it for another aircraft, the information the gauge uses to calculate the warning may be incorrect. Your only option is to replace the offending gauge.There is no switch other than "Q" - Sound On/Off that will eliminate the warnings.

Thanks for the replyIs there any way to find out which are the offending gauges so I can remove or replace them.Thanks againP123

I would look at Altimeters, especially Radar Altimeter (RADALT), and Vertical Speed Indicators (VSI) for starters!