I upgraded all my mIRCs to 6.21 , however NONE of them are working properly with Beep, such as /beep 1 1 , or just a simple /beep 2 . However, if you use backspace too much, and there isn't anything to backspace (such as I typed 1 character, and backspaced 2 chars) I still get the 'beep' tone.

Any ideas as to what happened ?

versions.txt:

81.Disabling sounds in the Sounds dialog now does actually disable all sounds, even those using /splay or /beep.

-genius_at_work

Ahh, that was the problem. And where is the changelog ?

http://www.mirc.co.uk/whatsnew.txt

It is linked on the 6.21 Released news item on the main page.