If only life were so easy!
I have the same wifi connectivity issues, the only device I can reliably use is my HTC Wildfire (android) phone in Hotspot mode.
My A500 was bought in the States, although I live in Oz.
I am on Build Acer_A500_4.010.13_COM_GEN2 (The Acer patch won't install on this version)
The double reset has not worked for me.
Tomorrow I will try the reset while connecting fix.
I leave for a 4 week OS trip on Friday, this was going to be my main method of keeping in touch. I am scared now, maybe it is bak to postcards and airmail letters.
I have spent many hours configuring the tab with apps and setting it up to blog and upload pictures. I do not want to do a factory reset at this late stage.