Just out of curiosity I checked phpinfo (Suhosin Extension 0.9.23). Do these settings seem okay?
Code
suhosin.post.max_array_depth	       100
suhosin.post.max_array_index_length	64
suhosin.post.max_name_length	       256
suhosin.post.max_totalname_length      256
suhosin.post.max_value_length	     65384
suhosin.post.max_vars	              2000
I assume that's the section you're talking about.

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