"bnd777" wrote in message
...
Sounds like Silver leaf to me and this is a contagious disease
The trees must be felled and burnt
Plum trees suffer badly from this I have lost all 5 of mine

Brown curled leaves are NOT a symptom of silver leaf.
[Strangely enough, silver leaves are one of the symptoms]

See http://www.which.net/gardeningwhich/...mcherryd2.html