I\'m having issue with running my Eclipse with the following config:
eclipse.ini
-startup plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar --
In my case reducing Xmx1024m to something smaller e.g Xmx512m make it works. So from all the responses (above and in similar other sites), it seems that you may try to massage/reduce the memory size.