It happens from time to time - OS becomes slow and unresponsible; HDD high activity.
When I switch to tty1 and run iotop, kswap and many others are at 99%.
Accidentally I've found out, that system goes back to normal when I kill Opera's operapluginwrapper - libflashplayer.so
Today, I've found another person with the same problem:
Anybody else having the same?
I've disabled plugins in opera (just on demand) until it's solved.
32-bit, 2GB RAM, TP R400 http://www.thinkwiki.org/wiki/Category:R400
opera Version 11.01 Build 1190