My Nokia 800 (not Diablo) has stopped it's download function via the web. When download link is selected by tapping, the download window ("open" or "save"?) doesn't pop up.

This function has worked without a problem almost daily for months. Everything else seems to be working fine.

Is there a setting that may need to be adjusted? Are there any troubleshooting techniques? Is a virus possible?

Any help is appreciated. Thanks!