Adobe is auto-refreshing a page (causing it to load twice)...why?

[JohnnyBGoode]

I have a .NET application that dynamically creates a PDF. I know that Adobe is automatically refreshing the page because the constructor of the .NET page is called twice. This is causing a problem because the .NET app hits a log file. Most times this PDF is created (but not every time), there are 2 instances in the log file for the hit. Why is this? How can I prevent Adobe from doing this?

 

[GordonIt]

Just an idea
Check all default actions on arobat or reader, regarding what is supposed to happen when opening a file.
Acrobat may do it's stuff then give you hand but too late it already did a refresh.
Also check if there are any anotations in the page. Behavior of Acrobat refresh is very much influenced by that. Again see the default openinig for annotations.
Last I have seen some influence of linearized PDF on this. Try disabling "optimize for web" option in the distiller profile you use, if you generate it using a distiller

 

[JohnnyBGoode]

Thanx, I'll try those.