After upgrading from 2010.1.309.35 to 2010.2.929.35 the rad context menu takes 6 seconds to display.
Any ideas why it stopped working?
Unfortunately we couldn't reproduce the problem , everything is working fine with your script on our test page.
The context menu is created relatively fast on both Mozilla Firefox and IE.
Would you be so kind to send us a liveUrl to your page in order to investigate the problem on your side.