Site tokens yeah thats something in the authentication and login process. Weve killed old and unused caches of login details to reduce load on the databases which means for a short while all recent re-logins for the last couple of weeks will be refreshed, killed and recreated. In a way its a little like the cruciform annihilation and resurrection of the Shrike saga only with fewer AIs and more blood! This is on the middle of the pile of things to look at.
Suffice to say the site has been stable as for speeds ive tested this on quite a few locations ( e.g. my client sites ) overall I see a 2second load time for a page with occasional 4 second lags on some page refreshes. I will continue to tweak a little each way to finesse apache for us. This is always at the top of my pile each day.
Meanwhile , please please please do keep letting me know the ups, the downs and the issues you discover. I can only help Matt and Dave if I know what needs to be resolved.