CG Warning

hi there,
atfer I turn the CG on I get the following Warning at the start of my
BorlndMM.DLL has allready allocated memory, which may now be reported as
false leaks. Do you want to continue hooking the memory manager? If I
select Yes I get a AV in @dchook@_1643. By no there is no AV.
Who has hooking the MM bevor the CG?
Michael Honnef