Segue abaixo o resultado do comando top. Não acham excessivo o consumo de memoria? Esta usando 2gb ram e mais 499mb de swap... o que pode estar havendo?
Tasks: 124 total, 3 running, 121 sleeping, 0 stopped, 0 zombie
Cpu(s): 8.7%us, 3.0%sy, 0.0%ni, 88.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2024704k total, 2010280k used, 14424k free, 14308k buffers
Swap: 498004k total, 462784k used, 35220k free, 1395484k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
32322 lunga 20 0 63764 27m 10m R 6.0 1.4 0:48.54 npviewer.bin
2634 root 20 0 452m 50m 24m S 1.3 2.5 21:54.41 Xorg
3221 lunga 20 0 1659m 60m 11m S 1.3 3.1 4:12.69 compiz.real
28054 lunga 20 0 723m 281m 16m R 1.0 14.2 5:07.83 firefox
38 root 15 -5 0 0 0 S 0.3 0.0 0:02.78 scsi_eh_3
1053 lunga 20 0 19112 1316 988 R 0.3 0.1 0:00.02 top
3233 lunga 20 0 212m 5276 3952 S 0.3 0.3 0:10.56 python
30949 lunga 20 0 528m 41m 13m S 0.3 2.1 0:09.78 pidgin
1 root 20 0 5244 596 516 S 0.0 0.0 0:00.39 init
2 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root RT -5 0 0 0 S 0.0 0.0 0:00.00 migration/0
4 root 15 -5 0 0 0 S 0.0 0.0 0:01.24 ksoftirqd/0
5 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
6 root 15 -5 0 0 0 S 0.0 0.0 0:03.63 events/0
7 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 cpuset
8 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
9 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 async/mgr