The LastPass Safari extension has been updated with full 64-bit (and 32-bit) Snow Leopard support. It also fixes a number of issues and improves the installer process to restart Safari for you.
To download go to: https://lastpass.com/lpsafari.pkg
In other news, we've been waiting nearly 8 weeks for Apple to get on with the business of approving our iPhone update with a minor amount of back and forth in that time. We feel terrible that a semi-broken version of LastPass for iPhone is out there and that we have no way to getting it fixed for our customers. Our apologies, our hands are really tied because Apple also limits us to 100 beta testers for the entire year.
Google Chrome extension is really starting to take shape, our first alpha release is measured in single digit days at this point...