Ubuntu eating my disk

[ROBERT@hsp:~] df /dev/sda2
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda2             46442536  33489000  10594392  76% /
[ROBERT@hsp:~] echo "(46442536 - 33489000 - 10594392)/1024" | bc
2303
[ROBERT@hsp:~]

Where are my two gibibytes of missing disk space?

>>51
It's also superior for pretty much everything else.
Except screen savers that do cute things when your computer falls off your desk... but if that happens often you probably don't care how stable or fast it is.