"Sign In" button doesn't work HPSIM 5.0

[eran70]

HPSIM 5.0 SP2 installation on windows 2003 server.
On some system group computers "Sign In" button in Insight manager login screen doesn't work. Nothing happens when we press button. All system group computers are windows 2000 profesional with sp4, IE 6.0 with sp1.
It works fine with Firefox, but we want to use IE.
HPSIM 4.2 works fine on same computers (because it is Java client based)
Thanks.

[David Claypool]

That would seem to point to security settings within IE. Try adding your HP SIM server to your trusted servers list.

[eran70]

David, I already tried it - doesn't help.
I compare IE options (security settings, cookies settings, ....) on computers where HPSIM login work and on "problematic" computers - settings are absolutely identical.