Hi,
sorry for being so late in this reply, I've been out on a month long holiday..
Now i'm in a position to share my expoerience with the Acer 1681WLMi during this trip. Since I was "holidaying", my computing needs consisted of mainly gaming, music, and some videos...
The hotel I was staying had good WiFi Coverage, and I got it up and running in almost no time, (without the staff support, I might add), the transfer speeds were quite good, furthermore, I had replaced the original 4-cell battery that came from Acer America, with an 8 cell one, so I got around 4.5-5 hours of continuous usage with 30% screen brightness + WiFi, i'd like to add here that this time will be reduced drastically, if you're playing games for instance, I run this ar 466Mhz after speed down...
Screen Flex, sadly is present, however, it's quite easy to get used to, just use both hands to "open" the flap, no problems after a while
The Build quality is quite good, considering it's plastic, there's NO squeaking, or visibly "compromising" components in the body
The only other issue is that after around 3 hours of gaming, the right hand side tends to get a little warm, but since this is the hard disk area, i can't attribute this to the lappie..... ( I got the 80Gb 7200 rpm, so it does tend to get hotter, although i dont recall this effect with the original 60gb one....)
hope this helps, ask me anythign else you'd like to know....