If you are using a secure VPN like CISCO then certain Web Timesheet functionalities might not work properly. The reason being secure VPNs (Like CISCO) adds a token to the Web Timesheet URL,

http://na1.replicon.com+CGTED12541522CFGFDODN21415B+/ < company name>

This breaks the application functionality. Secure VPNs are not supported by Web TimeSheet.