>even with trivial datasets on a standalone machine.
>
>Even from the command line, if I run
>
>REPORT FORM XXX PREVIEW IN SCREEN
>
>for a trivial report with a few hundred records
>
>it can take up to a minute to display the result.
>
>If I immediately repeat the command, it will typically halve the time.
>
>After four or five attempts, it is instantaneous.
>
>So it is clearly behaving like there is some kind of cacheing issue but on such trivial reports and trivial amounts of local data, this doesn't make sense.
>
>It's only been an issue since VFP9 and it seems to be more of a problem for me than my clients (fortunately - or they'd be ripping me apart!) Which suggests its something to do with the VFP environment but I can't track it down.
>
>Any suggestions?

Try with NODIALOG clause.

Without it, VFP calls DoStatus() method of UpdateListener more than necessary. A lot of time is wasted in thermometer rendering. The default code hasn't code to check the percent done and if worth to execute the thermometer update code.