dawozere - don't wait - bug your local Fiat dealer.
They tried to bluff their way out of doing my cinq ages ago. I got the usual "We'll contact you" - no contact, "Fiat will contact you" - still no contact, "If you haven't been contacted you probably aren't affected" and all the usual guff. Eventually (Think it took 5 enquiries) they booked it in and changed it.
Tom - look for signs of a leak: no pressure in fuel tank after a run, smell or puddle of petrol, or a damp tank - usually above the seam on the passenger side. If it has been changed under recall, and you'll have to check with Fiat for this, then you may if extremely lucky be able to get a new one fitted foc. If it didn't get the recall, then it's too late.
Check all the other seals and connections too.