What steps will reproduce the problem? 1. Drag and drop of a group of many items(around 30 different type of gui and shapes) from Location A to Location B(be it long distance or short distance) of the same page 2. When the left mouse is released, the mouse will show loading sign for some seconds before a prompt window appear 3. If continue is selected, everything run per normal until i drag and drop the same group of objects 4. If stop is selected, I will be prompted to stop a few more scripts. 5. Sometimes, when stop is selected, the drag will still be "on" (object stick to the movement of the mouse) until I click on a new location. When clicked, it prompt to stop or continue the script.

What is the expected output? What do you see instead? In Version 1.3.5.1, drag and drop will show no warning. At worst, it will just lag for a few seconds depending on the design complexity and computer. In Version 2.0.2, a warning to stop script appear, be it on any type of computer. Warning for Unresponsive Script prompting me to continue or stop the script: chrome://pencil/content/common/config.js:35 Output for stopping the script is different everytime, eg. resource://gre/modules/XPCOMUtils.jsm:323

What version of the product are you using? On what operating system? Pencil-2.0.2.win32.installer.exe on both Windows 7 and XP

Please provide any additional information below. Drag and drop a single item is fine