You should trying to built links slowly over time instead of adding a hundred in one sitting. This sudden spike of inward links could cause your problems. It would look unnatural, as links are not normally achieved this fast. Be patient with new websites as they will need time to mature before google will rank them at their full potential.
There are many ways you can deal with the Google sandbox and its effects, including:
Use an Existing , older domain names are buying instead of a new one.
Build links slowly over time.
Optimize your website slowly.
In the early days, concentrate on other search sites.
Utilize pay per click (PPC) for your initial placement.
The Google sandbox affect is not a well known algorithm by Google; it is just a phrase to describe the effect often seen with new websites that have only recently been found by Google. Do not build links too quickly with a new websites as it will look unnatural to Google results.