I would like to asking help from your guys about TM1 web. I found problem during access TM1 server via TM1 web with IE browser. When I entered user name & password on log-in page and click log-in. I'll find error message "Session timed out. Please login again" as below;

It's so strange because this problem occur with IE only not on Firefox. Moreover, if I enter TM1 web with IP address (such as http://xxx.xxx.xx.xx/tm1web), this problem will not happen.
I check permission and all TM1 configurations
- TM1Web folder permission --> set "Everyone" to have full permission
- Session configuration --> checking configure all configuration that involved with session time out on Web.config level , IIS level, ASP.NET level. Everything
is normally.
- IE Configuration --> I set security and cookies level to lowest level but still not work.
Here is my Environment information
Server OS: Windows 2003 R2 64 bits
TM1 Version: 9.5.1 (9.5.10000.5424) 64 bits
IE Version: 8.0
Firefox version: 3.6.8
*TM1 Web and Application server are deployed in the same server
Anyone who has idea to diagnose or solve this problem.
Thank you for your help
