Do I need to open the client(I use multiBit) while transaction is being confirmed? Do I need to keep the client(I use multiBit) running while transaction is being confirmed? I have started a transaction at 1:00 nignight, when I get up at 6:00, it still didn't finish! they say a transaction need 6 confirm witch cost about 1,5 hours.
No need to keep the client open. Whatever client that is.
The confirmations take place in the bitcoin network, not locally.