yeah, mine did the same, one key sticks, it's not entirely as durable as the old MS natural
it doesn't stick bad, just one key, pop it out, wipe it all down , works fine again
There was dirt behind mine,but the old Natural keyboard would have just ground it to powder , this one gets sticky
my main gripe with it, is they put 4 keys over the numeric.. =/*-
above it has a clear () backspace.. and i keep just hitting that back space when i want a -
or i hit that clear when i want the numlock to the left.