If you've been asked to reset your PlayStation Network password, that's due to unknown "irregular activity," according to Sony.
As reported by GamesIndustry.biz , a round of PSN password resets went out yesterday. Those affected were notified by email; here's part of the message those customers saw:
"The Sony Entertainment Network team routinely monitors for any irregular activity, and if such activity is detected, we may sometimes reset passwords of affected accounts to protect consumers and their account information."
Details concerning that "irregular activity" weren't released but as always, news like this unfortunately reminds everyone of the PSN hack back in 2011. Chances are, this is no big deal but it's good to have an explanation for a password reset. Personally, I'm thinking it might not be a bad idea to change your password once a year or so, anyway. Security is always paramount as far as I'm concerned.