i had the same problem until was finally able to connect. once i force update the system and it rebooted, everything seems to work fine now. in fact before updating, all the video apps and sound does not work properly. glad to have the updates but it should have shipped with proper software as the update screen is very well hidden!
I too have problems with the wifi on W510, perhaps it is related?
The problem appears after a reboot or when the tablet have been in sleep mode, the network icon in the taskbar has changed to one like normal indicates a cabled connection instead of the wifi icon.
The solution for me is simple, I just have to go to connection center > edit connections. The wifi somehow gets de-activated, and I have to right click and activate it. This happens aprox. every 4th reboot or sleep and is a bit annoying. I hope a update will fix this sooner or later.
I fixed my wifi problem a few days by traveling to the Samsung driver downloads and downloading the Broadcom ver 126.96.36.199 driver. I believe the driver that came with my Acer was 188.8.131.52x. Anyway, the wireless chipset is exactly the same between the Samsung and Acer w510 so updating from the Samsung site is fine. I upgraded the drivers Dec 6 and have not had a dropped connection since.
I have installed the driver you wrote about and it seemed to work fine for a few days. But today I have experienced same problem again twice, after a reboot my wireless connection is disabled and I have to enable it again manually.
Further I am beginning to experience more problems as other people have described, as the mouse pad not working, the touch screen being disabled after sleep, not starting at all after sleep etc. It seems like Acer have some job to do making fixing updates, and hopefully soon.