Sounds like you have duplicate form fields. Your values are concatenated together with commas, like this:
<input type="text" name="name1" value="value1">
<input type="text" name="name1" value="value2">
<input type="text" name="name2" value="value3">
Becomes
name1=value1,value2
name2=value3
If the second name1
has no value, it becomes
name1=value1,
name2=value3
Do you have multiple form elements on your page with the same name?
In classic ASP, multiple form values with the same name are joined into a comma-separated string in the Request.Form / Request.QueryString collections - so if there's a hidden field or textbox with name="foo" as well as your
Are there two form elements with the same name? If you have Firebug installed, it's worth taking a look to see if the data is actually being posted with the commas or if it's happening after ASP gets its awful paws on it.