I work at a large university in a mixed use building (classrooms, labs, offices). Our current Enterasys RoamAbout-based B/G wireless system is overwhelmed when classes are in session. It's no wonder since there's only perhaps 8 WAPs for the entire building and probably 500 students and 200 office workers with smartphones, laptops, and few rogue WAPs and whatever else competing for wireless access.
Try to get a connection with your laptop - forget it. If you're very lucky and get one, hurry up and get what you need fast 'cuz you'll get dropped after a few minutes. Oh, did I say fast? Sorry, it'll take 1-2 minutes just to get to Google's homepage.
Fortunately, or perhaps unfortunately, our IT people are upgrading the entire building to Aruba A-105 WAPs. On my low occupancy floor alone I see 5 WAPs installed (we have one RoamAbout now).
Does anyone have an opinion on how well the Aruba A-105 will operate in this kind of high density, high use environment?