I started using LastPass because we have used it at work recently. However, this product SEEMS to work in a limited fashion.. Filling in a password is fine. Even detecting that I just changed the password is cool (when it realizes, but that's not always.) I will describe in greater detail the various use cases that seem to fail. Support has said clear the local cache, logout/in and try again. I just spent the last hour demonstrating to myself I still have problems.
I use Chrome. I use Chrome profiles. That means I have to install LastPass on each Chrome profile. In general, this seems wonderful because it works to provide passwords set on one profile to carry though to the next profile under my single master account.
The problem is, sometimes/often, LastPass knows an old password on a different profile, and then doesn't update the chrome page password field. The password is IN THE VAULT, but won't automatically come out. At least once, by either defect or fat fingers, the wrong password then got updated in the vault. GAWD, SAVE ME!
Perhaps LastPass was meant for simpler use, but this use case of mine should be no different than using LastPass across multiple devices. If I am on 3 laptops and a tablet and an iPhone, i'd expect the last user update to be ubiquitously available to all the other devices.
Having gone through the cache clearing sequence, I find it neither works nor if it did would it be practical across a multitude of devices or profiles. Again, perhaps LastPass was designed from some simple(ton) use case.