Trillian is a popular alternative to running MSN, ICQ, Yahoo, and AOL messenger programs on Windows.

I use the 3.1 basic client partly because I like the interface and partly because it uses a LOT less resources than running all those messenger programs!

However I've found that, from time to time, Trillian turns off sounds and refuses to let me turn them back on again! I don't like it silent so I Googled for help on this but the only solution I could find was to completely uninstall Trillian and re-install it! Not a very satisfactory solution. Oddly almost no-one reports this problem, out of the huge numbers of happy Trillian users, so it is some special circumstance that tickles this bug.