Apparently new version of Ghostscript is out with quite a few imrpovements and fixes.

Changes:

• switched license to "GPLv3 or newer";
• fixed a lot of issues with transparency;
• fixed fonts handling, especially when generating PDF;
• numerous robustness, correctness, and performance improvements;
• security fixes addressing CVE-2009-0583 and CVE-2009-0792;
• new generic Esc/Page devices, eplmono and eplcolor, were added, as well as the cdnj500 device to support the HP DesignJet 500;
• the size of PostScript integers was limited to 32 bits, as recommended in the specification.

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More on this topic:

• Ghostscript 9.04 released with advanced color control
• Major update of CUPS is out
• Hewlett-Packard released HPLIP v3.11.7 with fixes
• HPLIP improves LEDM support, adds more drivers
• Gutenprint 5.2.7 adds support for more printers