diff --git a/build-compare.changes b/build-compare.changes
index 393d880..ee347af 100644
--- a/build-compare.changes
+++ b/build-compare.changes
@@ -1,8 +1,3 @@
--------------------------------------------------------------------
-Wed Sep 22 13:24:19 UTC 2010 - coolo@novell.com
-
-- ignore texlive's fmt files as discussed with werner
-
 -------------------------------------------------------------------
 Mon Sep 20 19:24:10 UTC 2010 - aj@suse.de
 
diff --git a/rpm-check.sh b/rpm-check.sh
index c83ae04..52bb489 100644
--- a/rpm-check.sh
+++ b/rpm-check.sh
@@ -279,7 +279,8 @@ check_single_file()
 	 # deprecated-list is randomly ordered, sort it for comparison
 	 case $f in
 	   */deprecated-list.html)
-	     sort -o $f $f 
+	     sort $f > ${f}.sort
+	     mv ${f}.sort $f
 	     ;;
 	 esac
        done
@@ -293,7 +294,8 @@ check_single_file()
      */fonts.scale|*/fonts.dir|*/encodings.dir)
        for f in old/$file new/$file; do
          # sort files before comparing
-         sort -o $f $f
+         sort $f > $f.tmp
+         mv $f.tmp $f
        done
        ;;
      /var/adm/perl-modules/*)
@@ -333,9 +335,20 @@ check_single_file()
        done
        ;;
      /var/lib/texmf/web2c/*/*fmt)
-       # binary dump of latex formats, we can ignore them for good
-       echo "difference in $file ignored."
-       return 0
+       # same of these are gzip compressed
+       for f in old/$file new/$file; do
+         fftype=`/usr/bin/file $f | cut -d: -f2-`
+         case $fftype in 
+         *gzip\ compressed\ data*)
+            gunzip -cd $f > $f.tmp
+            mv $f.tmp $f
+            ;;
+         *)
+            ;;
+         esac
+         # date is of variable length, e.g. 2009.7.21
+         sed -i -e 's|(format=[a-z]*tex 20..\.[0-9]*\.[0-9]*)|(format=luatex 2009.1.1)|' $f
+       done
        ;;
      */libtool)
        for f in old/$file new/$file; do