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I'm a little confused about the memory usage on my laptop (or maybe I just can't add). Here are the first few lines from top, sorted by memory usage: Mem: 511616k total, 379724k used, 131892k free, 12284k buffers Swap: 1036152k total, 1244k used, 1034908k free, 233320k cached PID USER NI S VIRT RES SWAP %CPU %MEM TIME+ COMMAND 29070 simon 0 S 154m 52m 101m 0.0 10.4 0:28.43 firefox-bin 29110 simon 0 S 151m 47m 104m 0.0 9.4 0:12.80 thunderbird-bin 28735 root 0 R 313m 17m 295m 0.5 3.6 0:14.46 X 29046 simon 0 S 34968 15m 18m 0.0 3.2 0:00.49 konqueror 29052 simon 0 S 34968 15m 18m 0.0 3.2 0:00.48 konqueror 28963 simon 0 S 33004 13m 18m 0.0 2.8 0:00.98 uim-toolbar-gtk 29031 simon 0 S 32612 13m 18m 0.2 2.8 0:02.14 kicker 29054 simon 0 R 28312 13m 14m 0.2 2.7 0:01.01 yakuake 29019 simon 0 S 32208 12m 19m 0.0 2.5 0:00.87 kded 29029 simon 0 S 29044 12m 16m 0.0 2.5 0:01.65 kdesktop 29027 simon 0 S 28996 11m 17m 0.0 2.2 0:01.35 kwin 29055 simon 0 S 27224 10m 16m 0.0 2.0 0:00.19 krandrtray 29034 simon 0 S 28012 9904 17m 0.0 1.9 0:00.30 kxkb 29098 simon 0 S 32988 8904 23m 0.0 1.7 0:00.11 knotify 29026 simon 0 S 26288 7592 18m 0.0 1.5 0:00.06 ksmserver 28827 simon 0 S 27900 6076 21m 0.0 1.2 0:00.07 klauncher 29056 simon 0 S 26504 6068 19m 0.0 1.2 0:00.06 kalarmd 29017 simon 0 S 26736 6008 20m 0.0 1.2 0:00.06 klauncher Just to clarify: VIRT = RES + SWAP, right? Now, the last time I checked, 154 + 151 + 313 = 618, which is a lot than the 380 shown in the summary, and that's just taking the first 3 lines, never mind the countless other processes using up to 35Mb each. Can anyone explain how 600Mb-1Gb of processes fit into 380Mb of RAM? I know firefox and thunderbird are memory hogs- they eat 150Mb on every system I use them on, but X usually takes 50Mb at most- not the 300 odd I get on this system. I tried logging out and restarting X, but even with no-one logged in it shows as 260Mb or more. As an aside, why on earth does krandrtray use 27Mb? It doesn't even do anything except call xrandr! Any ideas? Thanks Simon -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html