Email web form (for newsletter) - how to Stop having it create a wierd first name?

Hi,

We have a webform that captures just a customers email address.

The trouble is it wierdly makes their email address their first name too..

Our webform code is:

[code]

<form action="/FormProcessv2.aspx?WebFormID=54239&amp;OID={module_oid}&amp;OTYPE={module_otype} &amp;EID={module_eid}&amp;CID={module_cid}&amp;OPTIN=true&amp;PageID=/thank-you-free-flowe rs" enctype="multipart/form-data" onsubmit="return checkWholeForm8936(this)" method="post" name="catwebformform8936">

    <input type="text" maxlength="255" placeholder="Enter your email address" class="cat_textbox lfloat" id="EmailAddress" name="EmailAddress" style="width: 65%;" />

    <div style="display: none;"><input type="checkbox" name="CampaignList_34192" checked="checked" />Subscribe to: Consumers Only</div>

    {module_ccsecurity}

    <button id="catwebformbutton" value="Submit" class="cat_button lfloat" style="width: 25%; margin-top: 0px;">Sign Up</button>

    <script src="/CatalystScripts/ValidationFunctions.js" type="text/javascript"></script>

    <script type="text/javascript">

//<![CDATA[

var submitcount54012 = 0;function checkWholeForm54012(theForm){var why = "";if (theForm.EmailAddress) why += checkEmail(theForm.EmailAddress.value); if(why != ""){alert(why);return false;}if(submitcount54012 == 0){submitcount54012++;theForm.submit();return false;}else{alert("Form submission is in progress.");return false;}}

//]]>

</script>

</form>

[/code]

E.g someone signs up with emailtestingform@emailaddress.com.au  then BC will strangely automatically make their First name field testingform which is wrong. E.g smittenkitten@gmail.com has her name as smittenkitten <- so when Polly Bloggs does an order her parcel gets addressed to 'smittenkitten' not Polly Bloggs which she enters in her Checkout page.

Has anyone found a fix or have a solution?