I have a big problem. I just updated my MacBook Air maverick software and now it is asking for my keychain password for loads of things before it will let me login but none of my passwords work. HELP, I hate mavericks just to let everyone know!

I have updated my MacBook Air to mavericks and it downloaded ok restarted etc. I was then presented with the usual if albeit redesigned sign in screen. I put in my usual password and now it is asking me for my keychain password for several different things like calendar and so on. I have used what I thought was my keychain password as well as several others I can think of and not one of them I working so I cannot access my MacBook. Very annoying. Please help me. I really don't like mavericks at all.