First, I'm a distro junkie: I use Linux Mint 12 (64-bit) as the host and run various distros in Virtualbox. I had this problem only once before, long ago and in a distro I didn't care about; but now it's showed up in Linux Mint Debian 201204, which I just installed in VB. My usual browser is Opera (12.00 beta, build 1387).
I downloaded Privoxy 3.0.19-1 from Mint Debian's repositories, installed it, and set it up to be autoloaded at startup with defaults. It's always done fine for me without further configuring. Then I rebooted and configured Opera to work through Privoxy (localhost, 8118). However, Opera refuses to connect to any website through Privoxy and will only connect if I disable proxies. I've also tried doing '# privoxy' but Opera still doesn't connect.
/var/log/privoxy/logfile reads "Fatal error: can't bind to localhost:8118: There may be another Privoxy or some other proxy running on port 8118." As far as I can tell, only one Privoxy is running, and there's no other proxy I know of. However, I can do '# killall privoxy', and then '# privoxy', and Opera connects fine after that.
I don't know where to start; apparently Privoxy is running twice? Advice would be appreciated.
In faith, Dave