How to disable "Check for new version of Winamp at startup"

"As it turns out, if I also uncheck the option ""Allow Winamp to report anonymous usage statistics"", the preferences are saved correctly.

Alternatively, you can disable the internet connection entirely - choose ""Not connected to the internet"" under ""Select you internet connection"". (From here).

Lastly, you can manually edit the preferences file by running

notepad ""%APPDATA%\Winamp\winamp.ini""

From Start->Run (under XP)

Then change the line

newverchk2=1

to

newverchk2=0"