>>That's a good idea, but why they are not released automatically? Is this
>>behavior normal and documented or I've just discovered a bug, which strangely
>>nobody found before?
>
>Neither. :-) MSKB#Q186088 BUG: Report Variable Not Released After Report Runs

Ok, since my reports are called by programs or in forms with private DS, I probably would not be beaten by this problem... That's a relief :)