Can't log into Gnome session

[Wtwine]

Hi

I have installed Ubuntu Netbook Remix 10.04 on my Sony Vaio netbook. I can't log into a Gnome session as an alternative to UNR. The main reason for wanting to do this is to be able to add some applets to the panel which I use a lot. This is not possible in UNR, which is really irritating! However, I really like UNR otherwise, so don't want to just install standard version.

Even though I select "Gnome" from the session menue at the bottom, it just logs into UNR session. Synaptic shows that Gnome is not installed, but when I try to install it, I get this error message:
gnome: Depends: swfdec-mozilla but it is not going to be installed
I tried uninstalling Epiphany, which I sometime use instead of Firefox, but still got the error. I managed to install Ubuntu-Desktop, but this made no difference to being able to log into Gnome session.

thanks