The DocBook DTD must be 4.2 to validate with KDE 4.5.2. In the upstream release 0.9.95 of kdiff3 some languages have index.docbook with the 4.1.2 DTD. This patch changes the version number in the DOCTYPE to 4.2 for these languages. diff -Naur kdiff3-upstream-0.9.95/doc/de/index.docbook kdiff3-0.9.95/doc/de/index.docbook --- kdiff3-upstream-0.9.95/doc/de/index.docbook 2010-10-18 22:38:40.043252907 -0430 +++ kdiff3-0.9.95/doc/de/index.docbook 2010-10-18 22:41:05.954329524 -0430 @@ -1,5 +1,5 @@ -KDiff3"> diff -Naur kdiff3-upstream-0.9.95/doc/fr/index.docbook kdiff3-0.9.95/doc/fr/index.docbook --- kdiff3-upstream-0.9.95/doc/fr/index.docbook 2010-10-18 22:38:40.043252907 -0430 +++ kdiff3-0.9.95/doc/fr/index.docbook 2010-10-18 22:41:05.965408604 -0430 @@ -1,5 +1,5 @@ -KDiff3"> diff -Naur kdiff3-upstream-0.9.95/doc/it/index.docbook kdiff3-0.9.95/doc/it/index.docbook --- kdiff3-upstream-0.9.95/doc/it/index.docbook 2010-10-18 22:38:40.044252773 -0430 +++ kdiff3-0.9.95/doc/it/index.docbook 2010-10-18 22:41:05.976408528 -0430 @@ -1,5 +1,5 @@ -KDiff3"> diff -Naur kdiff3-upstream-0.9.95/doc/nl/index.docbook kdiff3-0.9.95/doc/nl/index.docbook --- kdiff3-upstream-0.9.95/doc/nl/index.docbook 2010-10-18 22:38:40.043252907 -0430 +++ kdiff3-0.9.95/doc/nl/index.docbook 2010-10-18 22:41:05.986408860 -0430 @@ -1,5 +1,5 @@ -KDiff3">