diff --git a/src/main/java/org/olat/core/commons/services/text/impl/nutch/NGramProfile.java b/src/main/java/org/olat/core/commons/services/text/impl/nutch/NGramProfile.java
index cee9175bfc66c36a4183ccc3a2e3f555ebf524a4..a4e5e673bfa8d6c416dd830bead25810574a6df7 100644
--- a/src/main/java/org/olat/core/commons/services/text/impl/nutch/NGramProfile.java
+++ b/src/main/java/org/olat/core/commons/services/text/impl/nutch/NGramProfile.java
@@ -472,7 +472,7 @@ public class NGramProfile {
         f = new File(profilename + "." + FILE_EXTENSION);
         FileOutputStream fos = new FileOutputStream(f);
         newProfile.save(fos);
-        System.out.println("new profile " + profilename + "." + FILE_EXTENSION + " was created.");
+        //System.out.println("new profile " + profilename + "." + FILE_EXTENSION + " was created.");
         break;
 
       case SIMILARITY:
@@ -486,7 +486,7 @@ public class NGramProfile {
         fis = new FileInputStream(f);
         NGramProfile newProfile2 = NGramProfile.create(filename2, fis, encoding);
         newProfile2.normalize();
-        System.out.println("Similarity is " + newProfile.getSimilarity(newProfile2));
+        //System.out.println("Similarity is " + newProfile.getSimilarity(newProfile2));
         break;
 
       case SCORE:
@@ -500,7 +500,7 @@ public class NGramProfile {
                                                 DEFAULT_MIN_NGRAM_LENGTH,
                                                 DEFAULT_MAX_NGRAM_LENGTH);
         compare.load(fis);
-        System.out.println("Score is " + compare.getSimilarity(newProfile));
+        //System.out.println("Score is " + compare.getSimilarity(newProfile));
         break;
 
       }
diff --git a/src/main/java/org/olat/core/util/filter/impl/XMLValidEntityFilter.java b/src/main/java/org/olat/core/util/filter/impl/XMLValidEntityFilter.java
index 6779846c33fb926875f692dad17e22c69a6904f1..b712f9e0c9985a8d9cf3c952b33179542e6757a1 100644
--- a/src/main/java/org/olat/core/util/filter/impl/XMLValidEntityFilter.java
+++ b/src/main/java/org/olat/core/util/filter/impl/XMLValidEntityFilter.java
@@ -80,7 +80,6 @@ public class XMLValidEntityFilter implements Filter {
 								writer.append('&').append(entityContent).append(';');
 							} else if (entityValue < 0x20) {
 								//skip them
-								System.out.println();
 							} else {
 								writer.append('&').append(entityContent).append(';');
 							}
diff --git a/src/main/java/org/olat/course/CoursefolderWebDAVMergeSource.java b/src/main/java/org/olat/course/CoursefolderWebDAVMergeSource.java
index 2ddd8393db1d80163eda9937fc8c45a024830e8f..e9b5a99cc7fe770bf678978d0b4842850f6d437b 100644
--- a/src/main/java/org/olat/course/CoursefolderWebDAVMergeSource.java
+++ b/src/main/java/org/olat/course/CoursefolderWebDAVMergeSource.java
@@ -104,11 +104,6 @@ class CoursefolderWebDAVMergeSource extends WebDAVMergeSource {
 		//add bookmarked courses
 		if(webDAVModule.isEnableLearnersBookmarksCourse()) {
 			List<RepositoryEntry> bookmarkedEntries = repositoryManager.getLearningResourcesAsBookmarkedMember(getIdentity(), identityEnv.getRoles(), "CourseModule", 0, -1);
-			for(RepositoryEntry bookmarkedEntry:bookmarkedEntries) {
-				System.out.println(bookmarkedEntry.getDisplayname());
-			}
-			
-			
 			appendCourses(bookmarkedEntries, containers, terms, noTermContainer, namingAndGrouping, false);
 		}
 
diff --git a/src/main/java/org/olat/course/nodes/cl/manager/CheckboxManagerImpl.java b/src/main/java/org/olat/course/nodes/cl/manager/CheckboxManagerImpl.java
index 6f520f8e5ad2fcfb7e304adfbf0872d77c0f8ed3..ce06632f4b2efe698a1913fc18e40dff671d8af0 100644
--- a/src/main/java/org/olat/course/nodes/cl/manager/CheckboxManagerImpl.java
+++ b/src/main/java/org/olat/course/nodes/cl/manager/CheckboxManagerImpl.java
@@ -228,10 +228,6 @@ public class CheckboxManagerImpl implements CheckboxManager {
 				}
 			}
 		}
-		
-		for(DBCheckbox dbCheckbox:uuids.values()) {
-			System.out.println("Remove them??? " + dbCheckbox.getCheckboxId());
-		}
 	}
 	
 	@Override
diff --git a/src/main/java/org/olat/ims/qti21/ui/components/AssessmentObjectComponentRenderer.java b/src/main/java/org/olat/ims/qti21/ui/components/AssessmentObjectComponentRenderer.java
index 91770e3dbb9eabf58c571bf046b8caf972bc83e7..56060b4215b9bad189d6bc63318c1db55dc55097 100644
--- a/src/main/java/org/olat/ims/qti21/ui/components/AssessmentObjectComponentRenderer.java
+++ b/src/main/java/org/olat/ims/qti21/ui/components/AssessmentObjectComponentRenderer.java
@@ -519,7 +519,6 @@ public abstract class AssessmentObjectComponentRenderer extends DefaultComponent
 				renderTable(renderer, sb, component, resolvedAssessmentItem, itemSessionState, (Table)block, ubu, translator);
 				break;
 			case Object.QTI_CLASS_NAME:
-				System.out.println("1");
 				break;
 			default: {
 				renderStartHtmlTag(sb, component, resolvedAssessmentItem, block, null);
diff --git a/src/main/java/org/olat/modules/docpool/webdav/DocumentPoolWebDAVMergeSource.java b/src/main/java/org/olat/modules/docpool/webdav/DocumentPoolWebDAVMergeSource.java
index 815710df72776c6da1fbcc266194cf41598641de..b6a137ed7567b6b6b36094f2469e9040c7d28750 100644
--- a/src/main/java/org/olat/modules/docpool/webdav/DocumentPoolWebDAVMergeSource.java
+++ b/src/main/java/org/olat/modules/docpool/webdav/DocumentPoolWebDAVMergeSource.java
@@ -129,7 +129,6 @@ class DocumentPoolWebDAVMergeSource extends WebDAVMergeSource {
 		VFSContainer documents = taxonomyService.getDocumentsLibrary(taxonomy);
 		SubscriptionContext subscriptionCtx = notificationsHandler.getTaxonomyDocumentsLibrarySubscriptionContext();
 		TaxonomyVFSSecurityCallback secCallback = new TaxonomyVFSSecurityCallback(taxonomyNode, subscriptionCtx);
-		System.out.println(taxonomyNode.isCanWrite());
 		documents.setLocalSecurityCallback(secCallback);
 		return new NamedContainerImpl(taxonomyNode.getTitle(), documents);
 	}
diff --git a/src/main/java/org/olat/registration/RegistrationController.java b/src/main/java/org/olat/registration/RegistrationController.java
index c90ec44ae5aaf21c5d964b168eb78922b61bc0ea..fa224b77d6fe6dd45ef410e2a1b96392ab44035c 100644
--- a/src/main/java/org/olat/registration/RegistrationController.java
+++ b/src/main/java/org/olat/registration/RegistrationController.java
@@ -386,7 +386,6 @@ public class RegistrationController extends BasicController implements Activatea
 			if(!htmlBody) {
 				body += SEPARATOR + translate("reg.wherefrom", whereFromAttrs);
 			}
-			System.out.println(body);
 			
 			if(sendMessage(email, translate("reg.subject"), body)) {
 				showInfo("email.sent");