apt-get problem

["Michal F. Hanula" <frankie@tristvrte.fphil.uniba.sk>]

When I try to run apt-get upgrade, it stops with 

mount: can't find /usr in /etc/fstab or /etc/mtab
E: Problem executing scripts DPkg::Pre-Invoke 'mount -o remount,rw /usr'
E: Sub-process returned an error code

I don't have a separate /usr partition (The machine has a 200MB HDD).
Any sugestions?
					aTdHvAaNnKcSe
						Miso&Frankie
PeS/1 forgot to say... running Slink on an i386