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diff --git a/src/math/ChangeLog b/src/math/ChangeLog
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--- a/src/math/ChangeLog
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@@ -1,3 +1,63 @@
+2008-08-17  Jason H Stover  <jhs@math.gcsu.edu>
+
+	* linreg.c (post_sweep_computations): New function to re-use the
+	re-usable. New function cache_init() to re-use the re-usable. 
+	pspp_linreg_with_cov() now estimates parameters via reg_sweep().
+
+2008-08-16  Jason H Stover  <jhs@math.gcsu.edu>
+
+	* linreg.c (pspp_linreg_with_cov): New function to estimate
+	parameters directly from covariance matrix instead of using the
+	entire data set.
+
+	* linreg.c (rearrange_covariance_matrix): New function to ensure
+	the columns of the covariance matrix correspond to the variables
+	in the model.
+
+2008-07-24   John Darrington <john@darrington.wattle.id.au>
+
+	* merge.c merge.h sort.c sort.h: Removed the value_cnt associated
+	with case ordering.  This ensures that the casereader returned by
+	sort_execute now has the same dimensions as the casereader passed 
+	in.
+
+2008-07-24  Jason H Stover  <jhs@math.gcsu.edu>
+
+	* covariance-matrix.c (covariance_pass_two): Dropped weight
+	argument. Corrected update of the entries of the covariance
+	matrix. 
+
+	* covariance-matrix.c (column_iterate): Dropped weight
+	argument. Corrected update of the entries of the covariance
+	matrix. 
+
+	* covariance-matrix.c (covariance_update_categorical_numeric):
+	Dropped weight argument. Corrected update of the entries of the
+	covariance matrix.
+
+2008-07-17  Jason H Stover  <jhs@math.gcsu.edu>
+
+	* covariance-matrix.c (covariance_update_categorical_numeric):
+	Altered to match new code in covariance_pass_two();
+
+	* covariance-matrix.h: Fix declaration of covariance_pass_two.
+
+	* covariance-matrix.c (covariance_pass_two): Moved numeric and
+	categorical scopes of V2 inside for loop. If V1 is not
+	categorical, but V2 is, recurse with the order of the variables
+	reversed to use the code in the previous "if" scope.
+
+2008-07-16  Jason Stover  <jhs@math.gcsu.edu>
+
+	* covariance-matrix.c (covariance_pass_two): Renamed
+	covariance_pass_one. Fixed update of covariance matrix when both
+	variables are categorical.
+	(column_iterate): New function.
+
+2008-07-15  Jason Stover  <jhs@math.gcsu.edu>
+
+	* covariance-matrix.c (covariance_pass_one): New file, new function.
+
 2008-06-21  Jason Stover  <jhs@math.gcsu.edu>
 
 	* linreg.c (pspp_linreg): Accept a struct design_matrix.  Use new