Yesterday at 11:45 Middle european time I noticed that the orderbook deapth of the bid side was very low. So i decided to place a couple of very low offers there. When i placed my first order of 2000 LTC @ 1$ it got executed within minutes and I saw the USD being deducted and the LTC added to my account. Everything fine so far. The order number of this is the following:
TXID: 4269089 2000LTC Executed @ 1.0(2000.0)
After this i placed another order at 1.5$ for another 2000 LTC. This order too was Executed within minutes and added to my account, the 3000$ were deducted immediately too. Everything looked right then.
TXID: 4269124 2000LTC Executed @ 1.5(2000.0)
You should not have been able to buy LTC at $1 each.
If this was caused by a software glitch at Bitfinex then it is reasonable for them to void the transactions - that is what NYSE and NASDAQ and any other exchange do.