reduce disk IO load by ionice when rsync

ionice -c3 rsync -avtz --progress src dst


-c class
The scheduling class. 0 for none, 1 for real time, 2 for best-
effort, 3 for idle.


Idle A program running with idle io priority will only get disk time
when no other program has asked for disk io for a defined grace
period. The impact of idle io processes on normal system activ‐
ity should be zero. This scheduling class does not take a prior‐
ity argument. Presently, this scheduling class is permitted for
an ordinary user (since kernel 2.6.25).

"Clock" keeps quit unexpectedly after weather location selected in Ubuntu 10.10

Error message saying:
"Clock" has quit unexpectedly
if you reload a panel object, it will automatically be added back to the panel.

Cancel turning email address into links in zim

find file /usr/lib/pymodules/python2.6/zim/parsing.py

delete @ pattern

url_re = Re(r'''(
    \b \w[\w\+\-\.]+:// %(c)s* \[ %(c)s+ \] (?: %(c)s+ [\w/] )?  |
    \b \w[\w\+\-\.]+:// %(c)s+ [\w/]                             |
    \b mailto: %(c)s+ \@ %(c)s* \[ %(c)s+ \] (?: %(c)s+ [\w/] )? |
    \b mailto: %(c)s+ \@ %(c)s+ [\w/]
)''' % _classes, re.X)

#url_re = Re(r'''(
#    \b \w[\w\+\-\.]+:// %(c)s* \[ %(c)s+ \] (?: %(c)s+ [\w/] )?  |
#    \b \w[\w\+\-\.]+:// %(c)s+ [\w/]                             |
#    \b mailto: %(c)s+ \@ %(c)s* \[ %(c)s+ \] (?: %(c)s+ [\w/] )? |
#    \b mailto: %(c)s+ \@ %(c)s+ [\w/]                            |
#    \b %(c)s+ \@ %(c)s+ \. \w+ \b
#)''' % _classes, re.X)

activate USB key of virtualbox on Ubuntu 10.04

sudo hald --daemon=no
then start virtualbox

little tip of associating amule to firefox

sudo apt-get install amule-gnome-support

"network.protocol-handler" items take no  effect on my firefox 3.5...