Anyone got a clue how I can solve this issue?
Yup. I had apparently unsolvable problems with Firefox, so I now run, as my second browser (I use Avant first choice) Opera - the current version works fine. Very fast and lots of ways to configure for easy, fast working.
All my unsolvable problems with FF 4 have been solved....No wait, I didn't have any problems with Firefox, it was only with IE-9.
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The photograph isolates and perpetuates a moment of time: an important and revealing moment, or an unimportant and meaningless one, depending upon the photographer's understanding of his subject and mastery of his process. -Edward Weston
LINK: For B+W with Epson 1400 (and other models) using black ink only:
Canon A80, A620