alikki,
I don't think 5/3 is out yet, maybe 5.0.3 ?
But anyway,
Do you have plenty of RAM? It may just be slow and you may have to wait some time if you have limited resources, or you may not be able to load it at all if you don't have the available resources. I think 5.0.3 wants you to have 1 GB of RAM, so you may want to check that.