I have been able to test some browser forms from SharePoint on the iPad 2. In fact I just tested the InfoPath 2007 expense form (sample form that comes with InfoPath 2007) that I have setup on my 2010 site submitting to our DBXL web service and it seems to work just fine. There is some UI oddities and it's not super fast but it does work.
What sort of issues are you having? Does your form have code behind (mine does not).
Ted