Steps to recreate:
1. Create a new Web Project
2. Click MyEclipse->Project Capabilities->Add Spring Capabilities
3. In Spring Capabilities Dialog, attempt to check Spring 2.5 AOP Libraries
4. Upon mouseclick (where the checkbox does not respond:
4.1 Wait 20 minutes while hourglass is showing
4.2 Get annoyed and use Windows Task Manager to End MyEclipse process
Here is the configuration details:
*** Date: Sunday, March 1, 2009 10:37:48 AM ET
<SNIP -- Please use MyEclipse > Installation Details > Installation Summary in the future>