Почитал тут фороникс на ночь... :)
http://www.phoronix.com/scan.php?page=news_item&px=ODE3MA
An X.Org Server update that was pushed into the Lucid repository last week has resulted in the system being slower and slower as its left on until it reaches a point where the system is no longer usable. The memory leak was tracked down to a set of patches that were made to fix some program crashes when the X.Org Server began supporting GLX 1.4.
The attempt so far to correct the patches have not worked out. In order to make the Ubuntu 10.04 LTS deadline, the developers are looking at just reverting three of the patches, which brings the GLX version back to 1.2. Ubuntu developers are now desperate for those willing to test out this updated X.Org Server package so they can determine by this Friday whether to ship it with Ubuntu 10.04 LTS or doing an early SRU (Stable Release Update). Right now this X.Org Server that's being tested is living in the ubuntu-x-swat PPA.
http://www.phoronix.com/scan.php?page=article&item=steam_linux_script&num=1
elif [ "$UNAME" == "Linux" ]; then
PLATFORM=linux32
# prepend our lib path to LD_LIBRARY_PATH
export LD_LIBRARY_PATH="${STEAMROOT}"/${PLATFORM}:$LD_LIBRARY_PATH
fi