diff -up nicotine+-1.2.16/pynicotine/config.py.orig nicotine+-1.2.16/pynicotine/config.py
--- nicotine+-1.2.16/pynicotine/config.py.orig 2010-07-22 15:32:20.000000000 +0200
+++ nicotine+-1.2.16/pynicotine/config.py 2010-11-09 13:32:15.176945245 +0100
@@ -318,7 +318,7 @@ class Config:
\
"urls":{
"urlcatching":1, \
- "protocols":{"http":"", "https":""}, \
+ "protocols":{"http":"xdg-open \"%s\"", "https":"xdg-open \"%s\""}, \
"humanizeurls":1, \
}, \
\