>By far the biggest problem with LastPass is that it sometimes just doesn't apply (or misapplies) the password or username to the appropriate form entries, and I have to go find it and copy it. Occasionally it also misses the saving of a new password (that it generated) and I have to put it in the vault by hand. I suspect this is a really hard problem given the massive variety of forms out there, but would be curious to hear if other password managers never have these issues.

Agreed, ambiguously named form input fields cause all kinds of havok, I helped our UX team track down one in our application because it was breaking my lastpass =)

For the second issue, I've just adjusted my workflow to accommodate LastPass's peculiarities. I just click "Generate Secure Password", copy it to the clipboard and fill the form myself. Then I have a copy of the password on the clipboard should LP miss adding the site properly.

While it's a slight pain to work around that particular issue, it's far better than what I used to do with regards to password reuse.