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Hi David,Since the concerned person had posted this " Where do I report bugs in ACS, or have I just done that? :-)" i replied accordingly.No harm intended.
Firefox is not a supported web browser for ACS 4.0.Please use IE or Netscape.http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_device_support_table09186a00805790b8.html#wp26638
1- As far as i know there is no enable password for RADIUS. ACS supports Separate (CHAP/MS-CHAP/ARAP).2- ACS 3.3 dump cannot be restored on ACS 4.0.When you are doing an upgrade you wont loose any config.Before you install or upgrade ACS, you should ...
Can you tell us what is the exact failure message you are getting in ACS ?May be this link can help you.http://www.cisco.com/en/US/products/sw/secursw/ps5338/products_user_guide_chapter09186a0080204ce9.html