memory leaks !?

[stefan parvu <stefan parvu comptel com>]

Hi all,

1.
I am curios about one fact: sometimes it happen that my machine has all
the memory absorbed, for instance if I am running netscape or x11amp the
memory is easily filled up. No way after that the kernel to free the
memory back. So the only way to do it is to reset the machine. These
sounds like a memory leaks? Isn't so? What tools or methods can I use to
measure them/prevent them?

I do not want to recompile for instance x11amp!

Please somebody could give a tip here?


2.
In the "The Linux Edge" it is said that a microkernel is "notably slower
than a monolithic kernel". See some real examples of implementations of
microkernels a la QNX  ... ? Is that notable slower in real nuclear
environment?