Paypal Sandbox working in Firefox but not IE 9

[rlspencer]

Hello I am testing my site in Sandbox however I ran into an issue.

In Firefox 7.0.1 the site works fine in sandbox mode.  When I check out the redirects like it should and the session info in encrypted.  However in IE 9 the session info is not passed and the data user data is in the clear. 

Firefox "
https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_flow&SESSION=3RuIzSifEnZW1DA89WNjRgNdR7AlOygUejAcRMh0-9BjZHfSem5oiu8w_qq&dispatch=50a222a57771920b6a3d7b606239e4d529b525e0b7e69bf0224adecfb0124e9b61f737ba21b081988562bf19d61623c669b34e5cd175ba4a "
IE9 "
https://www.sandbox.paypal.com/cgi-bin/webscr?&cmd=_ext-enter&redirect_cmd=_xclick&upload=1&business=webadmin%40herbaceousacres.com&receiver_email=webadmin%40herbaceousacres.com&item_name=Order+Number%3A+&order_number=60af3424&order_id=60af3424&invoice=60af3424&custom=e03974712622f1deb377828def557272&amount=20&currency_code=USD&address_override=1&first_name=Lynn&last_name=User&address1=4699+Runnymeade+Rd&address2=&zip=21117&city=WIAS+Mills&state=Belgium&country=&email=lr.spencer%40verizon.net&night_phone_b=4106545478&return=https%3A%2F%2Fherbaceousacres.com%2Findex.php%3Foption%3Dcom_virtuemart%26view%3Dpaymentresponse%26task%3Dpaymentresponsereceived%26pelement%3Dpaypal%26pm%3D1&notify_url=https%3A%2F%2Fherbaceousacres.com%2Findex.php%3Foption%3Dcom_virtuemart%26view%3Dpaymentresponse%26task%3Dpaymentnotification%26tmpl%3Dcomponent&cancel_return=https%3A%2F%2Fherbaceousacres.com%2Findex.php%3Foption%3Dcom_virtuemart%26view%3Dpaymentresponse%26task%3Dpaymentusercancel&undefined_quantity=0&ipn_test=&pal=NRUBJXESJTY24&no_shipping=1&no_note=1
"

I am using 1.9.8j and Joomla 1.7.0.  I though I was almost ready to go live or at least show the customer and this happens... lol  Does anyone have any ideas on how can this be resolved? 

Thank you,

Rich

[alatak]

Hi,

I will have a look.
txs for reporting.

[rlspencer]

Update:  When I disabled sandbox and sent the payment through normal paypal processing everything works perfectly.  So the problem only resides in sandbox mode and thank you so much Alatak for replying.

[alatak]

Hi,

txs for this info.
Strange anyway.. so i will still try to find out why.