[ubuntu] Router loaded factory defaults?

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http://ubuntuforums.org – Hi everyone. I have a Linksys WRT router with Tomato firmware 1.28 which I loaded about a year ago and since that time router worked just fine, until yesterday. I was astonished when I found out that the router suddenly had all factory default settings including admin password. There was a power blackout in our area just yesterday, maybe also a voltage shock more than standard 230 V. So I thought maybe it is the AC power shock which caused the router to load the factory defaults. However this is strange since no other electronic components in our house seem to be damaged (pc, tv, dsl modem... (Hardware)