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seen Feb 5 '13 at 14:38

Feb
3
comment QGIS 1.8.0 suddenly sluggish/unusable on Gentoo
To answer my own question, the issue was the "QT Graphics System" setting. As part of the upgrade I had inadvertently switched to to the 'opengl' setting (which apparently is experimental) rather than 'raster' (which is the default). Users on Gentoo can do eselect qtgraphicssystem list to see the current setting and eselect qtgraphicssystem set raster to set it (back) to raster if needed. Everything back to normal now!
Jan
17
awarded  Student
Jan
17
asked QGIS 1.8.0 suddenly sluggish/unusable on Gentoo