4GB RAM slows down ubuntu

[femi71 at web.de]

>> Now after installing kubuntu with kernel 2.6.24-24-generic the problem is the same: 3GB are ok, 4GB slow down the system dramatically (2, 3 times slower). 
> 
> Under 32 bits you hae to run with a special PAE kernel (available in the 
> repos, I forget the name but someone will know) in order to access that 
> much ram.

Sorry, i forgot to mention that i have a 32bit CPU. How to use the PAE kernel? Do i have to download it and compile myself?

Thanks

Günther
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