Well, I can't really explain that. Mt. Gox' own REST API says only 23 trades happened in that second.
And I had my Websocket script running as well, and the log also agrees with 23 trades in that second:
15:04:52 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.0257 0.01 (110.39)
15:04:53 110.02067 0.0201 (110.39)
15:04:53 110.0 3.3287 (110.38)
15:04:55 110.0 0.01 (110.38)