>Hi everybody,
>
>About once in a week we're getting this message from IIS and only re-starting it seems to be the cure.
>
>I guess it's too general question to answer, but anyway, may be someone had similar experience and know what should we change in our configuration.
>
>Thanks in advance.

Not much to go on.

I assume the IIS service is set to autostart? If not, anytime the machine restarts IIS will not start until manually started..