Qt 4.2.1 is a bug-fix release. It maintains both forward and backward+
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compatibility (source and binary) with Qt 4.2.0.+
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The Qt version 4.2 series is binary compatible with the 4.1.x and 4.0.x series.+
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Applications compiled for 4.0 or 4.1 will continue to run with 4.2.+
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*                           General                                        *+
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- QImage+
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        Fixed a potential security issue which could arise when transforming+
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        images from untrusted sources.+
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