[mod_python] Req object shared?

Does mod_python share the req object between all requests?  I am running 
into a problem with FieldStorage parsing the value for dropdowns as 
lists of two selection both of which are the same.  For example, when I 
view the form values from FieldStorage I see the following for the 
values of all the dropdown fields:

dd_field: ['val1','val2']

Anybody else run into this issue?  Its intermittent, it doesn't happen 
everytime, just every now and then.

Any help will be appreciated.

Thanks

Huzaifa Tapal