Version: 0.9.2 (using KDE KDE 3.5.7) Installed from: Gentoo Packages OS: Linux The current implementation of unsharp masking does not allow the user to specify a fractional radius. This makes the tool impossible to use in many cases. For making prints, using a radius of 1.5 or 1.8 is quite common.
Just for completeness: see also the disuccsion in this closed bug http://bugs.kde.org/show_bug.cgi?id=127374
*** This bug has been marked as a duplicate of bug 253622 ***
Fixed With https://bugs.kde.org/show_bug.cgi?id=253622