I prefer 2 scans in a week server and client. Scheduled scan is very important.
I found very much virusses with Scheduled scan in systemrestore.
and there should be bad persons in your company. maybe want to break passwords or system.
Thats why you must to do this.
Have a nice day

I am intereded to know why you think scheduled scans are important, ie what will they detect that real time scanning wont for example?

Thanks.

I think schedule scan should be done daily. you can set it to non bussy hours just like we did it at Lunch time .as our lunch time is of 1 hour and schedule scan completes within 1 hour so we have no problem with this .

It is necessary as I have seen no of times some how virus enters the pc with autoprotect enabled but while schedule scan it detects it and take nessary action.

yes pete and Bijay is rigth. we start scan 12:30 pm everybody will be lunch. and as pete said one reason can your protect disable.
and why you dont want scheduled scans?

i choice daily scan not weekly.

Thanks all for the feedback. Its not i didnt want to do scheduled scans but simply questioning necessary or not. I guess the answer is yes!

Thanks.