Source forge is under going a migration/upgrade stage. We will be migrating to a new datacenter (storage) some place in Chicago and our project SVN will be read only at that point. Please note that no updates from the team will be available at that time.
It looks like they may be updating their web shell/services which shall be nice as their current website is terrible. That's my hope anyways.
Easy to decide between SF and competitors. Who is the largest and has the possibility of getting DOL exposure? That's such a stupid question I don't need to answer it.
Assembla does give a better quality of service though - sourceforge can be very slow at times. Still, as I said, I prefer sourceforge's less commercial attitude, they have a more liberal open source approach.