Have these just been updated today? I tried them yesterday and got the usual 1/4 screen for safari, messages etc. So uninstalled. Tried it today, installed from the bigboss beta repo, then went back into Cydia and it showed an update available for both of them, so I did that and they are working great! It is version 5.0b for sbsettings and 1.5.6-3 for activator. I have disabled the top bar swipe, and instead set it to be part of notification centre. It's awesome. I'm happy to be on iOS5 now. Tethered doesn't bother me in the slightest.