language
This has bugged me on and off for a while - very, very occasionally I’d be working away in Visual Studio and suddenly my @ symbols would start coming out as double-quotes, a symptom of the condition known as ‘crazy Yankee keyboard syndrome’. I hadn’t figured out what triggered this, especially as all other applications were unaffected, and it happened little enough, and when I was busy enough, that I didn’t take time to find the cause and just lived with it until I restarted VS.