Drupal - White Page of Death

I was programming with Drupal and got a very ugly mistake - totally blank (white) screen. After some Googling I found that this can be fixed by increasing PHP memory size. Nope, it didn't helped. Then I tried some other tricks, like making a redirection to other page. But no. The solution was very simple: I had to change text encoding to "UTF-8 without BOM" (I used Notepad++ for that). It worked - no white screen ;) P.S. It took about 5 hours to understand that :)