Qalculate 0.9.6 uses in Calculator::fetchExchangeRates the deprecated gnomevfs:
cmdline = "gnomevfs-copy http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml";
This does not work with proxy servers defined using the proxy config file and is a known bug of gnomevfs:
http://bugzilla.gnome.org/show_bug.cgi?id=123900
However this has been fixed in gvfs and replacing the line quoted above with:
cmdline = "gvfs-copy http://www.ecb.int/stats/eurofxref/eurofxref-daily.xml";
works perfectly fine (+ similar change in Calculator::hasGnomeVFS()).
please provide a patch or at least indicate which qalculate files need correcting
FIxed in master (commit 191ac41)