Great! Only had the Signum a few days and please lads before i go any further don't say, "take it back!", i will believe me i will! Have noticed from the 2nd day of having the car that when i'm parked up and the engine's ticking over say at taffic lights there's a smell of fumes entering the cabin, not nice! I thought initially it might be that the car's been stood awhile and it had something to do with that. Left work 20 mins ago, pulled into my drive, left the car ticking over and yep definite fumes are entering the cab still, pretty strong smell too. Got out of the car left the engine running and looked into the car and i could see the cab was filling up with what looked like a white haze. Opened the door up and the smell was very strong indeed! Something else i noticed was that i had the heating on yet out of the 4 face vents (which were all open) only the one on the drivers side nearest to the window was giving any heat out, the others...nothing. Gonna ring the garage where i bought the car from first thing in the morning but before i do that was interested to know if anyone may have any idea what the problem may be? Perhaps someone out there has experienced this prob with their Signum or Vectra and know what the prob is? P.S; it most certainly seems to be diesel fumes if that helps at all. It's really pi**ed me off cos apart from that everything else is ship shape. The last thing i wanted was to have to take the car back BUT it seems i may well have to eh?