The Toad for DB2 5.0.1 commercial release is a patch release that contains fixes.
You can now download the installer for that release from the quest.com
supportlink site at:
https://support.quest.com/Default.aspx
You can review the latest release notes, including the list of resolved issues in 5.0.1 at:
http://toadfordb2.com/jiveHome/themes/toadfordb2/sbin/releasenotes/latest/ToadDB2RN.htm
On behalf of Toad for DB2 Team,
Vlas Titov