I've also had this a couple of times recently. I also use Opera.
It used to happen quite often maybe a year or so ago. Then it stopped happening. And now it has started again.
Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algoritm, algorithm on the code side." - tachyon