After three months from the time I faxed my contract to the company, the wireless gear I need to receive the signal was installed in my attic. The connection was an 2.4 ghz signal blasted in my direction from a high powered antenna a couple of miles away. From my home I actually have pretty good line-of-sight to the antenna, so the promise of a megabit was believable, but I was really just drinking the Kool-Aid.
After the initial set-up, I was getting seriously slow connection speeds, and had to endure a couple of weeks of configuring, tweaking, re-aligning and hour long phone conversations to get nowhere, then one day, everything worked, and worked well enough (never reaching a megabit in speed though) to play games online and check my email and work from home sometimes. Sporadic outages were the norm though, and most phone calls to the support line went unheeded.
Two weeks ago the connection died with the destruction of my provider's gear by a crane installing the gear of a competitor. They were unable to get everything back up in working order within two weeks which provided me the right to end my contract. Two weeks. That's a long fucking time to be without connectivity at home, and the whole experience has soured me on fixed wireless connectivity. Even though modems are slow, they are RELIABLE, and a bird in the hand is worth two in the bush.
It took me hundreds of dollars to learn that lesson.