Why wine keep printing so many messages about the same unimplemented functions?

[Yuri <yuri@xxxxxxxxx>]

When I run Adobe Digital Editions under wine 1.1.35 in FreeBSD I have 
these 2 lines printed in cycle:
wine: Call from 0x7e3ec596 to unimplemented function 
ntoskrnl.exe.KeGetCurrentThread, aborting
wine: Call from 0x7e3ec596 to unimplemented function 
ntoskrnl.exe.KeSetEvent, aborting

And both wine and wineserver run with high CPU usage.

Why they aren't implemented? When to expect this fixed?

Yuri