I have two Smart Board Wireless Slates, and so far I have been extremely unhappy.
I got the first one about a year and a half ago, and when I came back to school last year, it completely stopped working. I charged it, read all the technical support articles and even put in a trouble ticket. I finally decided that it needed a new battery, ordered it for a small fortune and continued to wait.
Finally in late October (months after the ticket was put in), I got a response and was told how to completely reset it. It worked! I was able to cancel the order of the battery and get on with my life.
Then I got a second one in February, but it came with a scratch in the plexiglass. Filled out a second support ticket, they said they would send me a new cover, but it has never arrived.
So do you wonder why I haven't called their tech support and asked them for help? This year the second Wireless slate isn't working right -- the mouse work fine but the pen doesn't? I've got through their troubleshooting site, reinstalled the software and it still doesn't work. It was in June.