I ve found that on my SBS 2008 sites, that the reports coming from the system do not always come at the scheduled time. Furthermore I ve done some investigation and found that they are not being generated on time. Often the reports are many hours late (my record so far is 12hrs + late). A few of my fellow MVPs have also seen this problem and Microsoft are investigating this with a view to understand the underlying issues. If you have had issues with this, then please contact me [email protected] and I can link you up with the relevant Microsoft team members so they can get some log files from you.
UPDATE 28th April 2010 – Microsoft have released this patch now – check out the blog post here