MrGrim, well, mobile market in my country is a total mess, even the official sellers are rudely expensive. I can bet that the first month or two prices are not going to be lower than 700€, so you get my point neighbor.
For example the lowest price for 5800 now is about 320€, and i bought mine in UK for 270€ 8 months ago.
allnameswereout, thank you for pointing my mistake, i was in a bit of hurry, so i didn't think about it properly, and yes, it's "garancija" on my language.
I don't know, maybe i should call Nokia officials here and ask them what to do. I thought somebody had similar experience. Thanks anyway!

Btw, can some admin please change the name of the thread to: "N900 Warranty" ?