[kde-freebsd] Process icons on the panel sometimes don't respond

[Yuri]

Every now and then I click on the process icon and nothing happens.
After a while and opening the K menu, process icons begin to work again.

Maybe something hangs for a while, or maybe clicks get ignored completely.

Do others experience such problem too?

kde-4.10.3, but this happened with the previous kde releases too, for at 
least few years.
9.1-amd64

Yuri