Don't know if this applies to K-Meleon 0.9 or not, but I see that the Mozilla Foundation has just released a bug fix FireFox 1.0.1 which talks about security problems.
http://www.squarefree.com/burningedge/releases/1.0.1.html
More security holes fixed in Firefox 1.0.1 will be made public after Firefox 1.0.1 is released. The most serious holes will be listed on the known-vulnerabilities page.
http://www.mozilla.org/projects/security/known-vulnerabilities.html
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