http://bugs.winehq.org/show_bug.cgi?id=10114
--- Comment #5 from Artem S. Tashkinov t.artem@mailcity.com 2007-10-20 11:02:34 --- Vitaliy, it's quite normal for Wine registry to grow up 10-20MB in size and even bigger and it's insane rewriting such a big file every time when no changes to the registry have been committed.
It changed, you just didn't bother to compare old and new. Wine auto-updates number of registry entries on each start.
The bug is about the *inefficient* manner in which registry files are being read and dumped, not about registry keys being changed.
I'm very sorry for bothering you.