Please before asking questions in the thread, read the OP (the original post).
The current version of wallet is 0.13.9 SegWit!
If you use 0.10.5, yes, now it works, but you will have big issues very soon (after the fork block 1,250,000).
You have to immediately upgrade to 0.13.9, if you didn't do that.
Exchanges told they updated the wallet months ago.
Re: giantkin, 0.13.0 (0.13) really had issues with transaction fees and with other bugs,
but it was fixed months ago by Vassilis Kritharakis, the current version 0.13.9 works fine, and exchanges already updated.
You may want to ask exchanges which wallet they use at the moment, if you have doubts.
If you use 0.10.5, after the fork block you will not be able to send your coins to exchanges,
and if you are not an experienced user, it will not be safe for you to use 0.10.5 after the block 1,250,000.
How to update to 0.13.9? Just run it (anyway before doing anything save your wallet.dat on an external USB card).
So the wallet.dat is the wallet itself? I must backup only it after any transaction?
For upgrade i just delete all other files, install new wallet and copy wallet.dat in the folder, right?
And what about coinhouse does somebody use it?