Ubuntu lucid alpha-2 in a 64bit virtualbox instance with 1.5 GB screen resolution about 1900x1100 pdf1: http://university.eve-team.com/files/ASAP2009.pdf pdf2: http://ra.ziti.uni-heidelberg.de/pages/student_work/seminar/hws06/Christian_Leibig/praesentation.pdf opening a pdf means to scroll over all pages and give enough time to actually show the pages only gnome-terminal: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1417 root 40 0 141m 35m 7020 S 0.8 2.4 0:04.60 Xorg start firefox 1417 root 40 0 134m 27m 7116 S 8.0 1.8 0:09.26 Xorg open pdf1 with evince: 1872 ijuz 20 0 393m 78m 13m S 0.0 5.2 0:24.13 evince 1843 ijuz 20 0 519m 64m 27m S 2.6 4.3 0:10.88 firefox 1417 root 40 0 155m 43m 7580 R 10.5 2.9 0:13.76 Xorg close evince PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1843 ijuz 20 0 523m 77m 27m S 44.6 5.1 0:16.68 firefox 1417 root 40 0 140m 29m 7168 S 1.8 2.0 0:17.27 Xorg open pdf1 with okular PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1417 root 40 0 293m 179m 7264 S 1.7 11.9 0:21.70 Xorg 1843 ijuz 20 0 523m 66m 27m S 0.0 4.4 0:19.61 firefox 1965 ijuz 40 0 546m 55m 27m S 0.0 3.7 0:27.23 okular close okular 1843 ijuz 20 0 523m 66m 27m S 0.0 4.4 0:20.44 firefox 1417 root 40 0 162m 55m 7264 R 4.1 3.7 0:22.75 Xorg open pdf1 with okular 1417 root 40 0 293m 180m 7264 S 0.0 12.0 0:26.35 Xorg 1843 ijuz 20 0 523m 64m 27m S 0.0 4.3 0:22.40 firefox 2043 ijuz 40 0 518m 39m 28m S 0.0 2.6 0:25.69 okular close okular 1843 ijuz 20 0 523m 64m 27m S 0.0 4.3 0:23.44 firefox 1417 root 40 0 162m 47m 7264 S 2.2 3.2 0:27.70 Xorg open pdf2 with okular 1417 root 40 0 511m 397m 7332 S 5.6 26.4 0:39.19 Xorg 1843 ijuz 20 0 524m 67m 27m S 2.7 4.5 0:33.90 firefox 2157 ijuz 40 0 519m 40m 28m S 2.3 2.7 0:20.42 okular open pdf1 with okular too: 1417 root 40 0 657m 544m 7404 S 1.0 36.2 0:43.39 Xorg 1843 ijuz 20 0 524m 67m 27m S 2.3 4.5 0:35.96 firefox 2157 ijuz 40 0 519m 40m 28m S 1.0 2.7 0:20.83 okular 2272 ijuz 40 0 518m 39m 28m S 0.3 2.6 0:26.30 okular close both okulars: 1417 root 40 0 657m 544m 7488 R 5.6 36.2 0:45.63 Xorg 1843 ijuz 20 0 524m 67m 27m S 8.4 4.5 0:45.11 firefox