[support] attachment - upload module problems 4.7beta

[Isaac Horton]

so far everything is working great for me on 4.7beta.
until i tried to upload an attachment.
I get different results depending on which browser is used.
in Firefox, when I click attach, It appears to attach the file or at 
least display the file size and location, but when I click submit the 
files are never added.
I looked to see if they were in the /files folder and its empty.
In IE6 things are even weirder. I never make it past clicking the attach 
button. Once clicking the button, a new blank window opens up and the 
progress.gif animation displays in the fieldset(on the original 
page)..... and thats all that happens... the animation never stops until 
i click away from the page.
I thought maybe it was a theme error since the theme is the only thing 
ive been working on(customizing) but its happening in bluemarine theme also.
checked my /files folder and its writable(777).
there's no javascript errors
all permissions have been set to allow for authenticated users to upload...
same problem persists throughout any drupal enabled subdomains.
Maybe there is an apache dependency or something like that I missed and 
isnt documented?
anyone run into anything like this?

here is the site Im working on:
http://drupal.brandform.net login: guest / pass: guest (for authoring 
privileges.)
any suggestions?

-Isaac