A maintenance notice has been posted.

We will bring the Free Realms PC servers offline Thursday, April 26, 2012 at 8:00 a.m. PDT 9:00 PM (San Diego time) to make a few little fixes, and introduce a new pet friend! The game servers will be unavailable for about 30 minutes.
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(UPDATED - Now 9:00 PM instead of 8:00 AM)

[ Original Announcement on SOE Forum ]