something's eating memory and i don't know what
I'm using Slackware 10 (kernel 2.4.26), and the amount of free RAM is getting lower and lower, constantly, in a steps of just a few kilobytes, but I installed the system with only basic services, as I need it just for very busy web server...
You may see a screenshot of a top utility after 16 minutes at i.vizio.biz/linux-top-2.gif, and after 2hr52min at this address: i.vizio.biz/linux-top-2.gif
The CPU is Intel Pentium 1 MMX 200 Mhz, RAM is SDRAM 256 MB...
Is it normal behaviour (I believe it is maybe a disk cache?), or is it an error?