Tjommi wrote : Basicly Murphy's law say that anything that can go wrong will go wrong at the worst possible time.
Actually Murphy's Law only states that "anything that can go wrong will". What Tjommi is referring to is really Finagle's Law and appears to have first been referenced by John W. Campbell Jr.. a well known SF editor, back in the 1940s.
According to Wikipedia: "Finagle's Law of Dynamic Negatives (also known as Finagle's corollary to Murphy's Law) is usually rendered:
Anything that can go wrong, will—at the worst possible moment
One variant (known as O'Toole's Corollary of Finagle's Law) favored among hackers is a takeoff on the second law of thermodynamics (also known as entropy):
The perversity of the Universe tends towards a maximum."
Although Finagle's Law is known as a corollary of Murphy's Law, the statement of it by John W. Campbell Jr. predates the history of Murphy's Law given by
http://www.murphys-laws.com/I first came across these laws decades ago in the British electronics periodical Wireless World in a very amusing yet informative article, and I still remember mention of "the IP of IO" from that (the Innate Perversity of Inanimate Objects) and was reminded of it by the wikipedia article:
""Finagle's Law" can also be the related belief, "Inanimate objects are out to get us."[2][3] Similar to Finagle's Law is the Hegelian-sounding verbless phrase of the German novelist Friedrich Theodor Vischer: "die Tücke des Objekts" (the perversity of inanimate objects)."
One other related reference that might be of interest to Francophiles is often brought to my mind when things go wrong - "Les choses sont contre nous" - look up "Resistentialism" in Wikipedia.
"The term was coined by humorist Paul Jennings in a piece titled "Report on Resistentialism", published in The Spectator in 1948[1] and reprinted in The New York Times[2]. The movement is a spoof of existentialism in general, and Jean-Paul Sartre in particular (Jennings gives the inventor of Resistentialism as Pierre-Marie Ventre). The slogan of Resistentialism is "Les choses sont contre nous" -- "Things are against us"."