diff --git a/cas-client-core/pom.xml b/cas-client-core/pom.xml
index 9f7923a..27855f6 100644
--- a/cas-client-core/pom.xml
+++ b/cas-client-core/pom.xml
@@ -2,7 +2,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <parent>
         <groupId>org.jasig.cas</groupId>
-        <version>3.1.9</version>
+        <version>3.1.10</version>
         <artifactId>cas-client</artifactId>
     </parent>
     <modelVersion>4.0.0</modelVersion>
@@ -124,6 +124,6 @@
     </dependencies>
 
     <properties>
-        <spring.version>2.5.4</spring.version>
+        <spring.version>2.5.6.SEC01</spring.version>
     </properties>
 </project>
diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/authentication/AuthenticationFilter.java b/cas-client-core/src/main/java/org/jasig/cas/client/authentication/AuthenticationFilter.java
index 9b546f0..152f681 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/authentication/AuthenticationFilter.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/authentication/AuthenticationFilter.java
@@ -87,14 +87,14 @@ public class AuthenticationFilter extends AbstractCasFilter {
         final HttpServletRequest request = (HttpServletRequest) servletRequest;
         final HttpServletResponse response = (HttpServletResponse) servletResponse;
         final HttpSession session = request.getSession(false);
-        final String serviceUrl = constructServiceUrl(request, response);
-        final Assertion assertion = session != null ? (Assertion) session.getAttribute(CONST_CAS_ASSERTION) : null;    
+        final Assertion assertion = session != null ? (Assertion) session.getAttribute(CONST_CAS_ASSERTION) : null;
 
         if (assertion != null) {
             filterChain.doFilter(request, response);
             return;
         }
 
+        final String serviceUrl = constructServiceUrl(request, response);
         final String ticket = CommonUtils.safeGetParameter(request,getArtifactParameterName());
         final boolean wasGatewayed = this.gatewayStorage.hasGatewayedAlready(request, serviceUrl);
 
diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java b/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
index 9e5d53a..d09ab1d 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/session/SingleSignOutFilter.java
@@ -88,22 +88,22 @@ public final class SingleSignOutFilter extends AbstractConfigurationFilter {
             }
         } else {
         	final String artifact = CommonUtils.safeGetParameter(request, this.artifactParameterName);
-            final HttpSession session = request.getSession(false);
 
-            if (session != null) {
+            if (CommonUtils.isNotBlank(artifact)) {
+                final HttpSession session = request.getSession(true);
+
                 if (log.isDebugEnabled()) {
                     log.debug("Storing session identifier for " + session.getId());
                 }
-                if (CommonUtils.isNotBlank(artifact)) {
-                    try {
-                        SESSION_MAPPING_STORAGE.removeBySessionById(session.getId());
-                    } catch (final Exception e) {
-                        // ignore if the session is already marked as invalid.  Nothing we can do!
-                    }
-                    SESSION_MAPPING_STORAGE.addSessionById(artifact, session);
+
+                try {
+                    SESSION_MAPPING_STORAGE.removeBySessionById(session.getId());
+                } catch (final Exception e) {
+                    // ignore if the session is already marked as invalid.  Nothing we can do!
                 }
+                SESSION_MAPPING_STORAGE.addSessionById(artifact, session);
             } else {
-                log.debug("No Session Found, so ignoring.");
+                log.debug("No Artifact Provided; no action taking place.");
             }
         }
 
diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/validation/AbstractUrlBasedTicketValidator.java b/cas-client-core/src/main/java/org/jasig/cas/client/validation/AbstractUrlBasedTicketValidator.java
index 3323791..fcfcfc8 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/validation/AbstractUrlBasedTicketValidator.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/validation/AbstractUrlBasedTicketValidator.java
@@ -111,12 +111,12 @@ public abstract class AbstractUrlBasedTicketValidator implements TicketValidator
             buffer.append(suffix);
 
             for (final Iterator iter = urlParameters.entrySet().iterator(); iter.hasNext();) {
-                buffer.append(i++ == 0 ? "?" : "&");
                 final Map.Entry entry = (Map.Entry) iter.next();
                 final String key = (String) entry.getKey();
                 final String value = (String) entry.getValue();
 
                 if (value != null) {
+                    buffer.append(i++ == 0 ? "?" : "&");
 	                buffer.append(key);
 	                buffer.append("=");
 	                buffer.append(value);
diff --git a/cas-client-integration-atlassian/pom.xml b/cas-client-integration-atlassian/pom.xml
index a47baf8..344d933 100644
--- a/cas-client-integration-atlassian/pom.xml
+++ b/cas-client-integration-atlassian/pom.xml
@@ -2,7 +2,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <parent>
         <groupId>org.jasig.cas</groupId>
-        <version>3.1.9</version>
+        <version>3.1.10</version>
         <artifactId>cas-client</artifactId>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/cas-client-support-distributed-ehcache/pom.xml b/cas-client-support-distributed-ehcache/pom.xml
index f0e6db8..8526939 100644
--- a/cas-client-support-distributed-ehcache/pom.xml
+++ b/cas-client-support-distributed-ehcache/pom.xml
@@ -5,12 +5,13 @@
     <parent>
         <artifactId>cas-client</artifactId>
         <groupId>org.jasig.cas</groupId>
-        <version>3.1.9</version>
+        <version>3.1.10</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
+    <name>Jasig CAS Client for Java - Distributed Proxy Storage Support: EhCache</name>
 
     <groupId>org.jasig.cas</groupId>
-    <artifactId>cas-client-support-distributed</artifactId>
+    <artifactId>cas-client-support-distributed-ehcache</artifactId>
     <packaging>jar</packaging>
 
     <dependencies>
diff --git a/cas-client-support-distributed-memcached/pom.xml b/cas-client-support-distributed-memcached/pom.xml
index d43cf7a..d4dc705 100644
--- a/cas-client-support-distributed-memcached/pom.xml
+++ b/cas-client-support-distributed-memcached/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>cas-client</artifactId>
         <groupId>org.jasig.cas</groupId>
-        <version>3.1.9</version>
+        <version>3.1.10</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -27,7 +27,7 @@
         <dependency>
             <groupId>spy</groupId>
             <artifactId>memcached</artifactId>
-            <version>2.4</version>
+            <version>2.4.2</version>
             <type>jar</type>
             <scope>provided</scope>
         </dependency>
diff --git a/pom.xml b/pom.xml
index 29197e1..9505754 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <project>
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.jasig.cas</groupId>
-    <version>3.1.9</version>
+    <version>3.1.10</version>
     <artifactId>cas-client</artifactId>
     <packaging>pom</packaging>
     <name>JA-SIG CAS Client for Java</name>