Bind 9.6.0p1- Windows - The service did not respond to the start or control request in a timely fashion.

[Chiesa Stefano]

Hi all.
Maybe it's not a new issue, but...

I have a Windows 2003 SP2 with a 9.4.2 release that worked fine for
years.
Today I wanted to upgrade my release to 9.6.
I installed it but when I try to start the service the system says:

Event Type:	Error
Event Source:	Service Control Manager
Event Category:	None
Event ID:	7000
Date:		1/8/2009
Time:		1:45:55 PM
User:		N/A
Computer:	S-MI-DNS
Description:
The ISC BIND service failed to start due to the following error: 
The service did not respond to the start or control request in a timely
fashion. 

No other messages in Event Viewer. I reinstalled the 9.4.2 version and
everything returned to work...
Does someone know why (and the solution)?

Thanks in advance.

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Stefano Chiesa