This question already has an answer here:
I sent some bitcoins to an address. The transaction seems to have been executed, and I do have a transaction hash; but when I search for it on http://blockchain.info/ it says "transaction not found"...
where did it go?!
Should I be worried? The transaction was processed at 04/10/2013 20:38 - about 3 hours ago now. Isn't that too long?
I did not add any transaction fee, because there is no option for it.
The transfer was started from bitcoin-central.
Since the money finally arrived, I guess i could slightly rewrite the question such as:
How can there be such a (long) latency from the moment a transaction is executed (eg. I get a transaction hash) to the moment the transaction is seen on the system (eg. blockchain.info)?
how can it be that it is not showing (hours later, not seconds later)?
How can I know the hash I got is valid/real?