query defining parameter dropdowns is run twice!

I built a very simple report which uses a query to define the options in the parameter’s dropdown. I used that same dataset to define the default for that parameter (meaning that it will just pick the first row from the dataset and use that as the default). When I run the report watching a Profiler trace on the SQL database, it runs that query twice. (Presumably, that’s once to fill the dropdown list and once to figure out the default.) That seems silly to me since it is the same query that is the same dataset in Reporting Services. Is there any way around this? My parameter bar is rendering twice as slowly as it should be.

I've tested against SSRS 2005 SP1 and the CTP of SP2.

Can you confirm your test by removing the default and re-testing to make sure it gets run once. Then adding the default again to confirm it goes back to 2 executions?|||Yes, it only runs it once if I don't specify that the parameter should have a default from a query.