I have an annoying render slowdown in Maya (scene from Test Center) on Linux (if compared with WinXP). It seams that Mandrake 9.2 doesn't 'see' all available memory... I have 2 modules 1Gb each, Kingston ECC Registered PC2100 DDR266. And standard KDE's info-tools shows smth like 900Mb 
How can I check that for sure and improve the situation?