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Already done my friend :-) Of course, I had totally forgotten to let you know that I had done so... but if you check your 'Replies' tab you will see them from me ;-)

I wonder, sometimes it takes really long to get my upvote counting - does anybody know the reason?

I think that it always counts, but the value is constantly changing. Or do you mean the drop down that says how many votes? That normally takes about 20 seconds to register after I click it.