Problems with large files on 2005 LE

Hi all,

I have upgraded to the new version of 2005, coming from 10.1 and the 
problems i had with earilier kernels and my MSI motherboard with NVidia 
Nforce3 chipsets seem to be fixed. So my raidsets on my serial ATA discs 
were finally recognized and i'm using sata_nv now and no longer the ide 
kernel modules. However, I now seem to have problems using K3b, which 
worked fine before and I have problems using large files, for example 
images of dvds. One such image I extract from a rar archive and during 
the extract I can see the file growing in size. At some point the size 
is reported to be 16+ Terabytes and after extraction is finished the 
file is reported to be 300+ Mb in size.

Can anyone point me in some direction to resolve these issues?

Hans