KDE Community released the second service release of KDE 4.3. It  contains a lot of bugfixes, performance improvements and translation updates.

From release announcement:" KDE 4.3.2 brings a nice number of bugfixes, some critical, some just fixing small annoyances:

• Many crashers have been fixed in KDE's core libraries, bringing more stability to all applications

• KWin's window compositing effects have been further stabilized by fixing a number of bugs in effect plug-ins such as the famous coverswitch window switcher

• The biggest number of bugs for this release has been fixed in KMail, KDE's email client, making it more reliable and usable by correcting a number of display issues

• Saving files over themselves works again in Okular, KDE's document viewer "

Most the distributions have packaged it already. Check it.