is there a memory leak in konsol

[Farhan Ali]

hi 

i run mandrake 9.0. when i boot my system and before i log into my account 
using KDE 3.0.1, the 
following is the out put of "free -m" in a non-X console. 

total used free shared buffers cached 
Mem: 250 138 112 0 6 68 
-/+ buffers/cache: 62 188 
Swap: 258 0 258 

now i log into kde and open konsol and just close it, and logout out of kde, 
and do a "free -m" again in the normal console. this time the output is: 

total used free shared buffers cached 
Mem: 250 143 107 0 10 91 
-/+ buffers/cache: 41 209 
Swap: 258 0 258 

where has the 5MBs gone. sometimes this is more than 50MB difference. 

moreover, the output of "who" is: 

farhan vc/2 Jan 21 00:09 
farhan pts/1 Jan 21 00:34 

while this time nobody is loged in with KDE. and nobody is loged in any 
console, except vc/2 from where this comand is executed. 

can anybody tell me what is happening 

please forgive my ignorance... i am very new to this linux thing

Farhan
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