Is this installation too big?

[pkaplan1 at comcast.net]

I recently re-installed kubuntu 9.04 onto a drive with a 10Gb partition for / and a separate 100Gb partition for /home. Until this, I always used the 32-bit version, but decided to install the 64-bit version. The / partition has always been 3-4Gb, even with 9.04, but I surprised to see / is suddenly 8.6Gb. 

I can't imagine that the 64-bit version should be so much larger than the 32-bit version (largely the same apps), but I noticed that there is a 4.9 file called /proc/kcore. It seemed to appear after I installed the kde 4.3 RC3 packages (can't be certain), but I don't recall there is a similarly bloated file on another 4.3-RC3 machine. This file seems able to interfere with the system by eating space. Although I can delete the file if I boot from a CD, I can't delete while on the offending machine. 

Any ideas what the file is, why it's there, why its so big and how to get rid of it? 

Paul 


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