Linked in and eHarmony have been breached!
In case you don't listen to the news in the morning - both Linked In and eHarmony have been hacked. The hackers got away with 6.4 million passwords on Linked In and 1.5 million on eHarmony. If you use either of those sites, you need to login and change your password - now - before you have your coffee.
If you use the same password on other sites, you need to change it there as well.
Both companies have posted notice in their blogs .. but if you don't read those blogs, you may not know. Investigation is continuing. The lists that have been seen don't include the user name .. but it is safe to assume that if they have passwords they also have login names.
More information is available here (and all over the web):