Hi guys what is the reason for block 22148 to become invalid...thanks 
In some rare events, 2 different pools (or miners) solve the block (or report solving the block) at the same time. In the 'photo finish', one is the winner, and the other has an 'invalid' block... this was our case with this one 
Cheers
Well that sucks. I came on here to ask the same question.