ajp with Apacje front end

Has any body correctly configured Apache ajp with Vaadin? I have the following configuration:

<VirtualHost *:80>

ServerName www.quotty.com
ServerAlias quotty.com

ServerAdmin support@quotty.com
ProxyRequests On
ProxyPreserveHost On

<Proxy *>
Order deny,allow
Allow from all

ProxyPassReverseCookiePath /MyApp /

ProxyPass / ajp://127.0.0.1:8009/MyApp/
ProxyPassReverse / ajp://127.0.0.1:8009/MyApp/

ProxyPass /VAADIN/ ajp://127.0.0.1:8009/MyApp/VAADIN/
ProxyPassReverse /VAADIN/ ajp://127.0.0.1:8009/MyApp/VAADIN/

ProxyPass /APP/ ajp://127.0.0.1:8009/MyApp/APP/
ProxyPassReverse /APP/ ajp://127.0.0.1:8009/MyApp/APP/

CustomLog /var/log/apache2/quotty.log combined

And I get the following error:

Failed to load the widgetset: /MyApp/widgetsets/com.vaadin.terminal.gwt.DefaultWidgetSet/com.vaadin.terminal.gwt.DefaultWidgetSet.nocache.js?1359751249920

If ajp does not work with Vaadin, which other alternatives can anybode suggest: put tomcat on port 80?