nope I haven't edited it.
I had a look to see if I have any active plugijns that change the sending information and all I can find is this plugin: http://coffee2code.com/wp-plugins/configure-smtp to be able to use my Google Apps account for sending emails. THe plugin ahs an option where I can set the default sender name and email but I left it blank which defaults to the wordpress default so this seems not to be the culprit.
using Version 1.2.2 of your plugin. Will try and reinstall, deleting hte old version completely.
plugin re-installed, checked recaptcha api key, it seems I am constantly getting:
Sorry, there were errors in your submission. Please try again.
* ReCAPTCHA error: your captcha response was incorrect — please try again
even though the mail was sent and arrived in my inbox (again with the wrong sender/name)