Well, after an excruciatingly long period of research and a panic-attack inducing purchase-decision I finally got my 1712 a couple of days ago.
The build-quality and the overall "feel" is very solid and robust, no poorly assembled cheap plastic anywhere.
The screen is really nice, bright and vivid, it doesn't have the dull "smogged" look frequently seen on laptop LCDs. No dead pixels (at least none noticed so far).
Also, the viewable area is pretty much exactly the same as my 19 inch CRT monitor right next to it has... cool.
Generally it feels really fast, tight and no-nonsense.
My whole ownership-experience started with a major "oh sh*t" moment, since I managed to destroy the entire harddrive about 20 minutes after I got the thing: PartitionMagic7 failed on me in the middle of repartitioning (apparently it has trouble handling 120+ gig drives... oops, how about an advance warning or something next time, for crying out loud?!?! ) leaving a huge non-bootable mess behind.
I ended up doing a full from-scratch partitioning and install using my existing copy of WinXP, and essentiall setup-files downloaded from AcerFTP... it actually ended up well, since everything works perfectly now and I had full control over what got installed (I find the growing trend of including "recovery disks" instead of full operating systems / system files / drivers pretty disturbing...).
However... now let's see some other stuff.
I know several people on this forum claimed that the machine has virtually no heating-up issues at all.
Well, I played a round of WarcraftIII last night, and noticeable heat was generated: the power-button area and the lower frame of the screen got hottest, and even the palmrest got warm.
Of course everything is relative, and iIt wasn't anything crazy (e.g. the zd7000, which seems to be in constant scorching plasma-mode even if it's only idling) but it was present nevertheless. Same thing with the fan-noise, which inevitably follows heat...
Anyway, despite all that it seems like an impressive machine overall, and I'll be back if something worth posting comes up.