The May 24 flight director's report says that Spirit "had a fault this weekend" that led to a flight software reboot. The spacecraft was reconfigured and is "up and operational and healthy now".

My understanding is that a very infrequently occurring software glitch casued a reboot on Sol 131 (May 18th?). I'm assuming that these are seperate events.

(Flight director Fabretto characterized the spacecraft fault as "an interesting thing", on par with the fact that Opportunity "fortunately was smart enough to stop at the edge of the cliff". I don't like this guy.)

They did indicate that they "re-configured" the rover and that it was healthy, other than that the information is a little vague nowadays, especially as they no longer seem to be releasing the text based updates.

The exploratorium site just had a massive picture update from the pancams from both rovers, there are some cool pictures of the walls of distant gusev crater. And opportunity appears to be returning images for another big colour pan of endurance.