I seem to have stumbled on a solution to myK-Lite crash problem and so far, even the newest version, 2.4.3 is working with avast.
There are numerous posts on the K-Lite forum about the newer versions crashing. Most of the K-Lite gurus are telling those with problems to get more memory. However, one gentleman suggested getting rid of Windows Media Player 9 and going back to what you were using before that upgrade.
If that doesn't help, HP told me to get rid of ALL Windows Updates, even if it means reformatting the hard drive and reinstalling Windows XP. (That's what worked for me).
HP told me on the phone that a number of computers, regardless of age, operating system or memory specs simply don't get along with WMP-9 and/or the Windows Updates. While no one seems to know why this is, some people (myself included) have had numerous conflicts.
When I asked HP about the XP security holes and critical updates, the tech told me for the average user, a properly set up firewall (that includes XP's) and a good antivirus program (like avast) offers enough protection.
I'm not an expert and I don't pretend to be, but I've finally got K-Lite working with avast. I may eventually put the Windows Updates back in, but right now, the experiment is a success.
I don't guarantee this for anyone, but you might want to give it a try. If it doesn't work, Hornus' advice is the way to go.
Dave
P.S.: some folks here in SW Florida are raising llamas.
They like to spit.....