I have recently started having trouble scanning to a PDF. The McAfee On-Access Scanner appears to be scanning each image before it is passed on to Acrobat. This consumes nearly all of the system resources and can take up to 5 minutes to complete.
I never had this problem until a couple of weeks ago. So, I suspect it is a result of a recent automatic update of the McAfee AV software. If I disable the On-Access scanner everything works as it should.
The problem seems to be unique to Acrobat as I have no problems scanning with other applications.
I am using: Win XP, Acrobat 6.0 Std, McAfee Enterprise 8.5.0i