[embro]

My solution is Keepass on a shared drive with very a strong password.

For production stuff, I would suggest you use a key file on top of a password.

Key file tips :

1- Key file on Truecrypt encrypted USB key.

2- Use plugin OtpKeyProv in in conjunction with RSA SecurID or other Random key generator.

Also, automate backup of the password database everyday.

[embro]

I think you can also use Yubikey :

http://www.yubico.com/products/yubikey-hardware/