I had a 2 month old buy order at 13$ and tried to gamble some BTC at 4$.
Mtgox should not be taking fees from two order that self-fulfill themselves. or at least display a warning.
Also, I don't know what the fuck went wrong with Mt.Gox, (bots I suppose) but they should have a condensed History which we can understand, including order placed, not just bits of order fulfilled.
Selling 100btc gave me 6 page long of clueless.log
...
Fri 14 Oct 2011 01:32:33 AM GMT Out BTC sold: [tid:1318555953972562] 2.02721413 BTC at $4.03283 2.02721413 BTC 414.89860580 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Out BTC sold: [tid:1318555947945559] 1.00000000 BTC at $4.03283 1.00000000 BTC 416.92581993 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Fee BTC bought: [tid:1318555947742502] 1.03945120 BTC at $4.03283 (0.6% fee) 0.00623671 BTC 417.92581993 BTC
Fri 14 Oct 2011 01:32:27 AM GMT In BTC bought: [tid:1318555947742502] 1.03945120 BTC at $4.03283 1.03945120 BTC 417.93205664 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Out BTC sold: [tid:1318555947742502] 1.03945120 BTC at $4.03283 1.03945120 BTC 416.89260544 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Fee BTC bought: [tid:1318555947574780] 1.04572471 BTC at $4.03283 (0.6% fee) 0.00627435 BTC 417.93205664 BTC
Fri 14 Oct 2011 01:32:27 AM GMT In BTC bought: [tid:1318555947574780] 1.04572471 BTC at $4.03283 1.04572471 BTC 417.93833099 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Out BTC sold: [tid:1318555947574780] 1.04572471 BTC at $4.03283 1.04572471 BTC 416.89260628 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Fee BTC bought: [tid:1318555947400808] 1.05203789 BTC at $4.03283 (0.6% fee) 0.00631223 BTC 417.93833099 BTC
Fri 14 Oct 2011 01:32:27 AM GMT In BTC bought: [tid:1318555947400808] 1.05203789 BTC at $4.03283 1.05203789 BTC 417.94464322 BTC
Fri 14 Oct 2011 01:32:27 AM GMT Out BTC sold: [tid:1318555947400808] 1.05203789 BTC at $4.03283 1.05203789 BTC 416.89260533 BTC
Fri 14 Oct 2011 01:32:19 AM GMT Out BTC sold: [tid:1318555939316501] 1.00000000 BTC at $4.03283 1.00000000 BTC 417.94464322 BTC
Fri 14 Oct 2011 01:32:19 AM GMT Fee BTC bought: [tid:1318555939091812] 0.05838827 BTC at $4.03283 (0.6% fee) 0.00035033 BTC 418.94464322 BTC
Fri 14 Oct 2011 01:32:19 AM GMT In BTC bought: [tid:1318555939091812] 0.05838827 BTC at $4.03283 0.05838827 BTC 418.94499355 BTC
Fri 14 Oct 2011 01:32:19 AM GMT Out BTC sold: [tid:1318555939091812] 0.05838827 BTC at $4.03283 0.05838827 BTC 418.88660528 BTC
Fri 14 Oct 2011 01:32:14 AM GMT Out BTC sold: [tid:1318555934216132] 0.05874065 BTC at $4.03284 0.05874065 BTC 418.94499355 BTC
..........................
Please be aware that because Mt.Gox system executes trades automatically, we can not control orders that self-fulfill themselves.