On my machine, with Parallels installed, the llipd process seems to interrupt some of the processes and slow down the machine even when Parallels is not being used. Many people have been uninstalling and reinstalling whenever they need to use Parallels. I have found this is not necessary if you do this. I paused the process with the following command, and it definitely makes everything run faster when not running Parallels. Here is how to pause the llipd process:
sudo kill -STOP 130
The 130 number at the end is the process ID number of the llipd process, and you can find it with this command:
ps -wwax | grep llipd
If you want to run parallels, you must unpause the process by running this command:
sudo kill -CONT 130
NOTE: Although you are using the kill command, if you use the -stop and -continue signals, you will only be pausing the active process. It will not really kill it.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20070717095657136