Hi Juli,
Yes I have full admin access.
It is this field im talking about:
![0EM50000000T76b.jpg 0EM50000000T76b.jpg](/t5/image/serverpage/image-id/4083iF0D3781A78774630/image-size/large?v=v2&px=999)
And that is under "Leads" tab in SF.
No we don't have any smart campaign that change the lead source, and that is why I find it strange.
Thank you Juli! Looking forward to see if it is SF who have limit the string length.