GWT Lagging or Slow when rendering textbox - performance

Im experiencing some lag when I create a Web Application Starter Project when it renders the text box. Anyone know why and how to fix this? Its just the standard test code that comes with eclipse and is provided as a checkbox.
The video is here: http://videobin.org/+5hk/5x8.html

It is lagging because you are using development mode. Compile your app, than remove gwt.codsrv parameter from address.

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Thanks
Check out this asset Log Viewer.
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I'm working on a Windows Phone 7.1 project and got most of my work done and decided to add to the project the images for my tiles (62x62 and 173x173 PNGs) plus the JPG file for the splash screen (SplashScreenImage.jpg 480x800).
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Did anybody run into this issue before? Any ideas what could have gone wrong and how I could solve this exception? Any help is much appreciated!
Thank you in advance!
Andrei
Whenever I wish to change the Splashscreen and other images, here is what I do:
Locate the file on disk using Windows Explorer.
Open the file using some image editor (I use Paint.NET)
Remove the default image and replace with your image maintaining the dimensions.
Save the image and return to Visual Studio.
Rebuild the entire project.
This works seamlessly without any errors. ;)

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