As posted by TimTodd in this tread:

"Anyone know the significance of the symbol? Circle with an upside down Y?"

After close study of the end of Episode 126: North by Northwest I agree with TimTodd that the letters spell SFTZ. Here is a reconstructed model of the logo as it appears in Episode 126:

Now, as to the meaning of the "Y" symbol behind the letters S F T Z. Thinking back on an hold art history class I rememberd that the "Peace" Symbol was actually the letters N and D overlayed...Nuclear Disarmament.

Pulling out my old Boy Scouts manual I found that the letters C and E would fit with the semaphore type symbol for the "Y" that is shown in the logo above

So what does CE mean? Here are the most common definitions:

CE stands for "Common Era." It is a relatively new term that is experiencing increased usage and is expected to eventually replace AD. The latter is an abbreviation for "Anno Domini" in Latin or "the year of the Lord" in English. The latter refers to the approximate birth year of Yeshua of Nazareth (a.k.a. Jesus Christ). CE and AD have the same and value. 2004 CE = 2004 AD. The word "common" simply means that it is based on the most frequently used calendar system: the Gregorian Calendar

CE markings on medical devices and European electronic equipment establishes that the manufacturer's product conforms to all applicable legal and safety requirements.

CE - Cerium, atomic number 58 - a silvery metal, belonging to the lanthanide group. It resembles iron in color and luster, but is soft, and both malleable and ductile. Cerium has the longest liquid range of any non-radioactive element: 2648 °C (795 °C to 3443 °C) or 4766 °F (1463 °F to 6229 °F). (Thorium has a longer liquid range.) Although cerium belongs to chemical elements group called rare earth metals, it is in fact more common than lead. Cerium is available in relatively large quantities (68 ppm in Earth’s crust). It is used in some rare-earth alloys. Among rare earth elements only europium is more reactive. It tarnishes readily in the air. Alkali solutions and dilute and concentrated acids attack the metal rapidly. Cerium oxidizes slowly in cold water and rapidly in hot water. The pure metal can ignite if scratched. Want to have some fun...google Cerium & nanotech

CE stands for the second crappiest Microsoft operating system ever made...the first being Vista.