Walter has released two new versions of DMD. 1.058 contains a number of bugfixes. 2.043 gets the same bugfixes and then some, plus an overhaul of BigInt. The big fix in this release is a memory corruption regression involving associative arrays array appends. If you have been using 2.041/2, you would do well to upgrade.
EDIT: I hate when I forget to add the links!
I believe you mean memory corruption of array appends not associative arrays.
Indeed. Thanks!