As I was reading an article in the newest edition of c't germany's premiere computer magaine about poker-programs there was a nice sentence in regards to the randomisation needed for the logic in there. Here's the original text in german (and further down in english):

"Die Güte der Zufallszahlen der rand()-Funktion aus der Stdlib.h reicht allerdings für diesen Zweck nicht aus. Besser eignet sich der Ferrari unter den Zufallsgeneratoren, der Mersenne-Twister-Algorithmus, weil der (im SSE-2 Mode kompiliert) sehr schnell sehr zufällige Ergebnisse ausspuckt."

"The excellence of random numbers as generated by the rand()-function included in Stdlib.h does not suffice for this case however. Better is the Ferrari of random number generators, the Mersenne-Twister-Algorithm because (when compiled in SSE-2 Mode) it does generate very random numbers very fast."

Well so let's see do I believe some random (pun intended) ranters about the bad RNG or do I believe the experts? Well I guess I have to go with the experts on this one.