Right, fake orders make it really difficult to read the book, a lot have been said before about this flippers.
The other thing is that Eurex interest rates products (especially Bund, bobl and Euribor) are used by institutional investors, Investment banks and Hedge funds for hedging and speculation purpose.
To cover or cut a huge position, to hedge a credit issue of the same maturity, etc... , this guys don't hesitate to send 10,000+ lots orders at the market, sweeping sometimes the price through 5-10 levels.
That's what made me change radically my trading on the bund and reduce the time in trade to the minimum, in order to be less exposed to unexpected moves.
You need to be aware of what is going on in other markets, because you're more vulnerable to these moves when there is a major event on the credit market (GM, Ford spread widening for ex), a big downmove on emerging markets, a flight to quality, economic data releases, etc...
Some friends, brokers at big institutions tell me that they regularly have orders to buy or sell huge quantities in a matter of seconds...
Have fun!
