Try using the openVPN portable (from here) and a portable browser installed on a portable USB thumb drive. I have read that this can get around any logging.
Finding a decent VPN service that is free, (like ultrasurf was), is difficult to near impossible. If it's vital that you have a VPN, I recommend you think about investing in a premium VPN service.
Sites that block anonimizers (ultrasurf, hotspot shield, etc...) generally don't touch premium services (in my experience). If you use one a lot, you'll find it's a worthy investment, (so much faster and stable), and it doesn't cost that much.
I myself use AceVPN and am incredibly satisfied with it. You will need VPN service account details to use openVPN, so it's probably best you start shopping around for a service.
As for free service alternatives similar to Ultrasurf, I'm afraid I do not know of any.