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Hello,

we have by accident introduced a bad regression in kdepimlibs in the 4.5=20
branch. The effect of that regression is that sending a mail can take quite=
 a=20
long time, during which the GUI is blocked, up to several minutes.
We have fixed this issue in the 4.5 branch with revision r1156791 [1], whic=
h=20
was to late for the 4.5.0 tag.

The problem happens for KMail 1 (from the 4.4 branch) in combination with=20
kdepimlibs from the 4.5 branch.

Please include this patch in your packages. It is also attached to this mai=
l,=20
for you convenience.
Dirk: Can you also please add the commit to the tag?

Technical background: Before sending a mail, KMail looks if any of the=20
recipients is a nickname or a contact group, to transform those to real=20
addresses. For those, we use a lookup/search in the Nepomuk database. By=20
accident, we used a regexp/contains search, instead of an exact match searc=
h,=20
which would have been sufficient. Apparently, Nepomuk/Virtuoso is quite slo=
w=20
for regexp/contains searches, which is where the speed regression came from=
=2E=20
The patch restores the correct behaviour of doing an exact match search.

Regards,
Thomas McGuire

[1] http://websvn.kde.org:80/?revision=3D1156791&view=3Drevision

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Index: akonadi/contact/contactsearchjob.cpp
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=2D-- akonadi/contact/contactsearchjob.cpp	(revision 1156790)
+++ akonadi/contact/contactsearchjob.cpp	(revision 1156791)
@@ -50,7 +50,7 @@
=20
 void ContactSearchJob::setQuery( Criterion criterion, const QString &value=
 )
 {
=2D  setQuery( criterion, value, ContainsMatch );
+  setQuery( criterion, value, ExactMatch );
 }
=20
 void ContactSearchJob::setQuery( Criterion criterion, const QString &value=
, Match match )

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