There are filenames that are so weird that cannot be deleted by neither GNOME/KDE/etc. nor the rm shell command. This how to explains you different ways to cope with those files often dropped there simply by accident but sometimes actually being rootkits.

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Strigi on kubuntu 9.10 / KDE 4.3 ppa seems to have some problems starting.
It first shows this error whenever you try to enable it:
The name org.kde.nepomuk.services.nepomukstrigiservice was not provided by any .services file
if you first enable Nepomuk and then also tick the Strigi it will then prompt you this error:
service failed to initialize, most likely [...]

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Although being much more conservative (and sound) than M$ Windows, also linux systems have several programs and services run at startup. Here is how you can manage, add and remove them.

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On Ubuntu 9.10 Karmic support of AppArmor for Firefox 3.5 has been included. Such support should be disabled by default, however it could happen it gets enabled by default. I couldn’t figure out why.
Unfortunately the current AppArmor profile for Firefox does not work very well. Firefox starts very slow and the interface remains incomplete. It [...]

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It happened me with a few different setups that suddenly, after an update, all printers disappeared from the printing dialog.
The smart would then check if cups is running with
sudo /etc/init.d/smart status
but would see a [failed] output.
The dmesg log would prompt you with some messages like the following one:
operation=”sysctl” requested_mask=”r::” denied_mask=”r::” fsuid=0 name=”/proc/sys/crypto/fips_enabled” pid=NNNNN profile=”/usr/sbin/cupsd”
In short [...]

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