Hi,

       I am trying to create a Force.com project in Eclipse Helios but I am getting an error as Unable to create project. Reason: OutOfMemoryError: Java heap space. 

My eclipse.ini settings are:

-startup
plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.2.R36x_v20101019_1345
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
512m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-XX:MaxPermSize=256m
-Xms512m
-Xmx1024m

I am getting an error while creating the project in eclipse kepler on Ubuntu linux machine. 

Error is Unable to create package manifest.

Exception: java.lang.ClassCastException:com.salesforce.ide.api.metadata.types.<etadata$JaxbAccessorF_fullName cannot be casr to com.sun.xml.internal.bind.v2.runtime.reflect.Accessor.