SharePoint Data View Web Part ParameterBinding and Filtering...WSS vs. MOSS

Question

I have a DataViewWebPart that is filtered based on a text box which contains the a string.

When run under WSS, the first time the page loads, it filters the data fine.

When run on a MOSS machine, the first time the page loads, no data is appearing.

The text box has the correct value in it to filter.

I also have a drop down list in a custom toolbar webpart. When you change the value of the dropdown (postback) it fetches and filters the data correctly under both WSS and MOSS.

The only difference between the two default.aspx pages on the WSS and MOSS machines is the ListIDs where it's grabbing the data from.

I even copied the .dll from the WSS machine into the GAC of the MOSS machine and still no love...

Any ideas?

I'm thinking it has to do with the rendering order of webparts on MOSS being different than that of WSS, but that's a total guess.

Thanks