SharePoint 2010 FBA Claim Based Authentication - Single Sign On between 2 web application

I have two web applications in SharePoint 2010 say http://svt-pc-01:10000(Team Site) & http://svt-pc-01:11000(My Site) and it is having FBA configuration.

Scenario:

Step-1: I will open http://svt-pc-01:10000(Team Site).

Step-2: I will Click on Sign In which will redirect me to my Custom Login Page:

CustomLogin Page Code:

status = SPClaimsUtility.AuthenticateFormsUser(Context.Request.UrlReferrer, txtUserName.Text, txtPassword.Text);
                                if (status)
                                {
                                    if (Context.Request.QueryString.Keys.Count > 1 && Context.Request.QueryString["Source"] != null)
                                    {
                                        Response.Redirect(Context.Request.QueryString["Source"].ToString(), false);
                                    }
                                    else
                                    {
                                        Response.Redirect(currentWebUrl, false);
                                    }
                                }

Step-3: Now I am successfully logged into "http://svt-pc-01:10000"

Step-4: Now I click on My Site Button which will redirect me to "http://svt-pc-01:11000"

Step-5: By Clicking that button it will call a mediator page Authentication.aspx which is used to set the token for site "http://svt-pc-01:11000" to achieve single sign on.

Authentication.aspx Code:

SPWeb web;
SPUser user;        
string password = "password1";

protected void Page_Load(object sender, EventArgs e)
        {            
            web = SPContext.Current.Web;
            user = web.CurrentUser;

            SecurityToken token = null;
            if (null != (token = GetSecurityToken(user.Email)))
            {
                EstablishSessionWithToken(token);

                if (web.Url == ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString())
                {
                    Response.Redirect(ConfigurationManager.AppSettings["MSIMainSiteUrl"].ToString());
                }
                else
                {
                    Response.Redirect(ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString());
                }                
            }
            base.RedirectToSuccessUrl();

        }
        private void EstablishSessionWithToken(SecurityToken securityToken)
        {
            if (null == securityToken)
            {
                throw new ArgumentNullException("securityToken");
            }
            Microsoft.SharePoint.IdentityModel.SPFederationAuthenticationModule fam = Microsoft.SharePoint.IdentityModel.SPFederationAuthenticationModule.Current;
            if (null == fam)
            {
                throw new ArgumentException(null, "FederationAuthenticationModule");
            }
            fam.SetPrincipalAndWriteSessionToken(securityToken);            
        }

        private SPIisSettings IisSettings
        {
            get
            {
                SPWebApplication webApp;
                if (web.Url == ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString())
                {
                    webApp = SPWebApplication.Lookup(new Uri(ConfigurationManager.AppSettings["MSIMainSiteUrl"].ToString()));
                }
                else
                {
                    webApp = SPWebApplication.Lookup(new Uri(ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString()));
                }                
                SPIisSettings settings = webApp.IisSettings[SPUrlZone.Default];
                return settings;
            }
        }

        private SecurityToken GetSecurityToken(string username)
        {
            SecurityToken token = null;
            SPIisSettings iisSettings = IisSettings;
            Uri appliesTo;
            if (web.Url == ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString())
            {
                appliesTo = new Uri(ConfigurationManager.AppSettings["MSIMainSiteUrl"].ToString());                
            }
            else
            {
                appliesTo = new Uri(ConfigurationManager.AppSettings["MSIMyLockerUrl"].ToString());
            }

            SPFormsAuthenticationProvider authProvider = iisSettings.FormsClaimsAuthenticationProvider;
            token = SPSecurityContext.SecurityTokenForFormsAuthentication(
                appliesTo,
                authProvider.MembershipProvider,
                authProvider.RoleProvider,
                user.Email,
                password);           

            return token;                                             
        }
    }   
}

(Here I have hard coded the password for user)

Step-6: Now what happens is that it redirects me to http://svt-pc-01:11000 with user logged in. (Sumtimes it doesnt redirect me and throws login page instead. Works randomly don't know why.)

Step-7: Suppose this time I am succesfully logged in. Now I click on "Home" to get back to http://svt-pc-01:10000.

Step-8: Again this will call the mediator page Authentication.aspx to set token on Team Site http://svt-pc-01:10000.

Step-9: What happens now is that I am redirected to "http://svt-pc-01:10000" but user doesnt show logged in. FedAuth Cookie is set then also.(I also observed here that when I reset IIS and refresh the same page it shows user logged in.)

Summary:

I login into TEAM Site with Custom Login Page and then I click on MYSITE and it calls Authentication page to set token for MYSITE. Sometimes it logs me in and sometimes it throws login page.

Also when I am successfully logged into MYSITE when i come back to TEAM site with same mechanism of setting token it doesn't show user logged in.

One more thing I observed is that on IISRESET the same page shows me logged in user on Team Site when I come back from MYSITE.

I am facing this issue since long and unable to resolve it. Can you please help me with it? Thanks a lot.