I’ve now tried it and it works like a charm, the CVS part that is!
However, it seems like the update site is not fully equivalent with the all-in-one installer when it comes to manage plugins (Im used to download the Groovy plugin using the Help – Add Software feature, which is not available anymore. But that another issue – recently I’ve always used the all-in-one installer.
Just wanted to say that downloading Eclipse Ganymede and then installing MyEclipse gives you a function CVS connection on Snow Leopard. I guess I should mention that I did install Xcode as well, however I dont know if this is necessary or not, I did it before I tried installing MyEclipse as an update.
-aka