Can I log in to multiple LastPass accounts on the same computer at the same time?
If you use the same browser, only one account can be logged in at a time.
However, if you use two different browsers, you can disable the shared login state in each LastPass browser plugin (LastPass Icon > Preferences > Advanced > UNcheck 'Share login state between other browsers' and restart the browser). You can then login to two separate accounts at a time, one on each browser.
If you have LastPass for Applications or the LastPass Mac Desktop App installed, you will need to make sure that the 'Share Login State' option is unchecked in those programs as well as your browsers.
Users who have not installed the LastPass binary files for their browser will not have the 'Share login state between other browsers' option.
If you plan to share a LastPass account, you should check out the identities feature.