BTW, I'm building an e-book for schoolboys/girls here, for free. No secrets, only basics. :) I'm trying to make it interactive with excercises. It could be interesting if it works like a GUI for helping with some practice. I have developed a JavaScript program for implementing a GUI for Chess. (Act...
I get the impression that I pretty much excluded "everything" already, but that is not a logical explanation. The occurrence of the same problem with one of my PCs in a totally different network seems to prove that it is something only on my PCs, but surprisingly on both PCs at once. Have you check...