OK, important note - this article posits a Slammer-type worm that can use the vulnerabilities patched by MS03-043 to replicate. The article uses the term "in minutes" - sensationalism? Perhaps, but perhaps not.
In any case, make sure you're devices are patched with MS03-043. You can get the XPE version here.
Flaw could unleash another Slammer | CNET News.com