qgis/Quantum-GIS — pull request #193 by dakcarto (2012-07-17 21:12:00+00:00)
Title: [Feature] Freeze-thaw labeling tool, with on-the-fly transformation support.

This has been extensively tested, though not on all platforms. Works well with labeling of point, line and polygon vector layers. Added bonus or being very helpful for freezing intensive (slow) label renderings like polygon's 'free' and 'horizontal' modes.

See:

http://osgeo-org.1560.n6.nabble.com/New-adv-labeling-freeze-thaw-tools-td4988479.html