Good to hear you've got it working! I sent you a PM...
For maps and stuff, you can report inconsistencies to NavTeq, or TeleAtlas. I'm not sure which TomTom uses, but you can gop to their web sites, and send them both something to report a problem with that street.
I'm pretty much in the same boat as you - Nokia 6620 and was looking for a good GPS package. I've got a 2GB MMC card, and the TomTom receiver.
I've got the TomTom Mobile 5 UK package, and have ordered the Navigator 5 Software-only package (knowing full well that it's only supposed to work on Palm/PPC).
The TomTom GPS unit is pretty good, but although it's supposed to be a SiRF Star III unit, I'm not getting as good reception (6-7 Sats locked) as some people have reported while using the GlobalSat (9 sats ) or Holux GPS (8 sats locked) receivers... I have tried using it in the burbs, as well as downtown T.O. - not much diff...
I'm sniping ebay for the last few days trying to snatch one of either a GlobalSat BT338 or the Holux Slim GR236... I'll try to grab both and do a head-to-head comparison and post it here and gpspassion.com
Let me know how your setup turns out... I haven't gotten the Canada maps yet, so I have no idea how well it's going to work with the UK Mobile 5 package... at the worst, I'll just have to pick up a Palm Zire 72 or second hand T3 (or some BT-enabled PPC unit) nd use it as a dedicated PIM/GPS unit...
/O