I'm developing an app for android an Playbook OS. On android the app runs fast, transition-effects are looking good and everything is fine. But on my Playbook (Playbook OS 2.1) the app runs slow, sometimes the reaction on user-clicks takes about 10 - 15 seconds. I used web inspector to have a look at the web console but no errors appeared there. For my app I'm using Phonegap/cordova 2.1, jQuery 1.8.2 and jQuery mobile 1.2.0.

Unfortunately I have no idea what could be the reason for this lack of speed. 

Has someone experienced similar app-behaviour or has someone a tipp what I could do to improve performance?

Thanks