This interceptor's main purpose is to write the last and previous login dates for a particular user as they log in to Confluence.

I remember when we ran some functional tests with multiple threads simulating concurrent users logging in, that there were issues in this class and I was forced to comment out the writing of these dates to allow the tests to proceed.

A customer who setup Confluence against postgres 8 also had issues with this class. He's confluence instance was losing connections. As soon as he installed a patched version of this class with date writing commented out, he reported back that no database connections were lost. (http://support.atlassian.com/browse/CSP-1132)