When you use context.redirectToPage(url) the XPages engine logs a RedirectSignal exception to the XPages log file in the IBM_Technical_Support folder. Please stop that :-)
Example:
11-03-19 11:18: Exception Thrown
Context Path: /path/db.nsf
Page Name: /page.xsp
com.ibm.xsp.acl.RedirectSignal
at com.ibm.xsp.designer.context.XSPContext.renderPage(XSPContext.java:194)
at com.ibm.xsp.designer.context.XSPContext.redirectToPage(XSPContext.java:917)
at com.ibm.xsp.designer.context.XSPContext.redirectToPage(XSPContext.java:929)
at com.ibm.xsp.script.WrapperXSP$fct_XSPContext.call(WrapperXSP.java:544)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTTry.interpret(ASTTry.java:109)
at com.ibm.jscript.std.FunctionObject._executeFunction(FunctionObject.java:261)
at com.ibm.jscript.std.FunctionObject.executeFunction(FunctionObject.java:185)
at com.ibm.jscript.std.FunctionObject.call(FunctionObject.java:171)
at com.ibm.jscript.types.FBSObject.call(FBSObject.java:161)
at com.ibm.jscript.ASTTree.ASTCall.interpret(ASTCall.java:197)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:90)
at com.ibm.jscript.ASTTree.ASTIf.interpret(ASTIf.java:85)
at com.ibm.jscript.ASTTree.ASTProgram.interpret(ASTProgram.java:119)
at com.ibm.jscript.ASTTree.ASTProgram.interpretEx(ASTProgram.java:139)
at com.ibm.jscript.JSExpression._interpretExpression(JSExpression.java:435)
at com.ibm.jscript.JSExpression.access$1(JSExpression.java:424)
at com.ibm.jscript.JSExpression$2.run(JSExpression.java:414)
at java.security.AccessController.doPrivileged(AccessController.java:730)
at com.ibm.jscript.JSExpression.interpretExpression(JSExpression.java:410)
at com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:251)
at com.ibm.jscript.JSExpression.evaluateValue(JSExpression.java:234)
at com.ibm.xsp.javascript.JavaScriptInterpreter.interpret(JavaScriptInterpreter.java:222)
at com.ibm.xsp.binding.javascript.JavaScriptMethodBinding.invoke(JavaScriptMethodBinding.java:111)
at com.ibm.xsp.actions.ActionGroup.invoke(ActionGroup.java:135)
at com.ibm.xsp.component.UIViewRootEx.invokePhaseMethodBinding(UIViewRootEx.java:1735)
at com.ibm.xsp.controller.FacesControllerImpl.invokePhaseMethodBinding(FacesControllerImpl.java:450)
at com.ibm.xsp.controller.FacesControllerImpl.access$0(FacesControllerImpl.java:444)
at com.ibm.xsp.controller.FacesControllerImpl$ViewPhaseListener.beforePhase(FacesControllerImpl.java:533)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:197)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:120)
at com.ibm.xsp.controller.FacesControllerImpl.render(FacesControllerImpl.java:270)
at com.ibm.xsp.webapp.FacesServlet.serviceView(FacesServlet.java:260)
at com.ibm.xsp.webapp.FacesServletEx.serviceView(FacesServletEx.java:157)
at com.ibm.xsp.webapp.FacesServlet.service(FacesServlet.java:159)
at com.ibm.xsp.webapp.FacesServletEx.service(FacesServletEx.java:138)
at com.ibm.xsp.webapp.DesignerFacesServlet.service(DesignerFacesServlet.java:103)
at com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:588)
at com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335)
at com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:865)
at com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:808)
at com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:577)
at com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319)
at com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662)
at com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482)
at com.mindoo.domino.jna.xsp.http.DominoJNAHttpService$2.call(DominoJNAHttpService.java:76)
at com.mindoo.domino.jna.xsp.http.DominoJNAHttpService$2.call(DominoJNAHttpService.java:1)
at com.mindoo.domino.jna.gc.NotesGC.runWithAutoGC(NotesGC.java:481)
at com.mindoo.domino.jna.xsp.http.DominoJNAHttpService.doService(DominoJNAHttpService.java:68)
at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357)
at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313)
at com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)
