Fedora 7 and Eclipse 3.3

I get the following warning when I try to run Eclipse 3.3 on Fedora 7.

GC Warning: Repeated allocation of very large block (appr. size 651264):
        May lead to memory leak and poor performance.

I get this even after setting mem size to max(512) in eclipse.ini 

And later, when I try to add more plugins, eclipse terminates itself
showing segmentation fault.

Please let me know if there is any workaround?

Thanks,
Deeptika