UI Problem After I Reset Password

I forgot the password of my account so I went to my OS X disc and reset my password. Then the problems start.

OS X frequently asks me for "login" keychain password. I have probably fixed it by deleting ~/Library/Keychains/login.keychain. OS X now asks me for "login" keychain password less frequently, but it still shows up.

Also, Time Machine no longer backs up my computer - It stucks at preparing backup. I have turned it off and turned it on and chose the backup drive again, still no luck.

I am using OS X Leopard with 10.5.6 and a Time Capsule.

Thanks for your help.

Ed: The above problems seem to be solved but I have a new problem. Please read #3. Thank you very much.

 

Thanks for that... But is there any other way that I don't need to erase my Time Machine backup? I am sure I will need to restore something...
Ed: OK it seems it is backing up now. Thanks

Ed 2: Now I have a even bigger problem. For some reason OS X is outer-glowing UI elements. This is so ugly and is getting on my nerves. I am sure that it didn't happen before and these glows don't appear on my friends' Mac. Screenies...

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Glowing in Tabs! Argh!

Please help... Thank you.