Gmail produces the following error/warning in firebug.

Eb is not defined

1

function Bb(a){if(a[sb]&&a[sb](daa)){var�ents)};f.x2b=c;f.B2b=b;f.y2b=a;return f}

I initially started seeing this while while on clients’ websites, but can now say it’s a gmail thing. So don’t stress.. 😉