diff --git a/phpgwapi/inc/class.egw_framework.inc.php b/phpgwapi/inc/class.egw_framework.inc.php
index 6d25dfb586..c872476a15 100644
--- a/phpgwapi/inc/class.egw_framework.inc.php
+++ b/phpgwapi/inc/class.egw_framework.inc.php
@@ -207,7 +207,7 @@ abstract class egw_framework
 		// - "connect-src 'self'" allows ajax requests only to self
 		// - "style-src 'self' 'unsave-inline'" allows only self and inline style, which we need
 		// - "frame-src 'self' manual.egroupware.org" allows frame and iframe content only for self or manual.egroupware.org
-		$frame_src = array("'self'", 'manual.egroupware.org');
+		$frame_src = array("'self'", 'manual.egroupware.org', 'www.egroupware.org');
 		if (($additional = $this->_get_csp_frame_src())) $frame_src = array_unique(array_merge($frame_src, $additional));
 
 		$csp = "script-src 'self' ".self::csp_script_src_attrs().
diff --git a/phpgwapi/inc/class.filesystem_stream_wrapper.inc.php b/phpgwapi/inc/class.filesystem_stream_wrapper.inc.php
index dc45a62758..8be319a0e4 100644
--- a/phpgwapi/inc/class.filesystem_stream_wrapper.inc.php
+++ b/phpgwapi/inc/class.filesystem_stream_wrapper.inc.php
@@ -250,14 +250,14 @@ class filesystem_stream_wrapper implements iface_stream_wrapper
  	 * See fseek() for more information about these parameters.
  	 *
  	 * @param integer $offset
- 	 * @param integer $whence	SEEK_SET - Set position equal to offset bytes
- 	 * 							SEEK_CUR - Set position to current location plus offset.
- 	 * 							SEEK_END - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
+ 	 * @param integer $whence	SEEK_SET - 0 - Set position equal to offset bytes
+ 	 * 							SEEK_CUR - 1 - Set position to current location plus offset.
+ 	 * 							SEEK_END - 2 - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
  	 * @return boolean TRUE if the position was updated, FALSE otherwise.
  	 */
 	function stream_seek ( $offset, $whence )
 	{
-		return fseek($this->opened_stream,$offset,$whence);
+		return !fseek($this->opened_stream,$offset,$whence);	// fseek returns 0 on success and -1 on failure
 	}
 
 	/**
diff --git a/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php b/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
index 323960baf1..eb6a5c0906 100644
--- a/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
+++ b/phpgwapi/inc/class.sqlfs_stream_wrapper.inc.php
@@ -478,9 +478,9 @@ class sqlfs_stream_wrapper implements iface_stream_wrapper
  	 * See fseek() for more information about these parameters.
  	 *
  	 * @param integer $offset
- 	 * @param integer $whence	SEEK_SET - Set position equal to offset bytes
- 	 * 							SEEK_CUR - Set position to current location plus offset.
- 	 * 							SEEK_END - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
+  	 * @param integer $whence	SEEK_SET - 0 - Set position equal to offset bytes
+ 	 * 							SEEK_CUR - 1 - Set position to current location plus offset.
+ 	 * 							SEEK_END - 2 - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
  	 * @return boolean TRUE if the position was updated, FALSE otherwise.
  	 */
 	function stream_seek ( $offset, $whence )
@@ -489,7 +489,7 @@ class sqlfs_stream_wrapper implements iface_stream_wrapper
 
 		if (is_resource($this->opened_stream))
 		{
-			return fseek($this->opened_stream,$offset,$whence);
+			return !fseek($this->opened_stream,$offset,$whence);	// fseek returns 0 on success and -1 on failure
 		}
 		return false;
 	}
diff --git a/phpgwapi/inc/class.vfs_stream_wrapper.inc.php b/phpgwapi/inc/class.vfs_stream_wrapper.inc.php
index 441c27f52b..6aae8f2ab8 100644
--- a/phpgwapi/inc/class.vfs_stream_wrapper.inc.php
+++ b/phpgwapi/inc/class.vfs_stream_wrapper.inc.php
@@ -411,14 +411,14 @@ class vfs_stream_wrapper implements iface_stream_wrapper
  	 * See fseek() for more information about these parameters.
  	 *
  	 * @param integer $offset
- 	 * @param integer $whence	SEEK_SET - Set position equal to offset bytes
- 	 * 							SEEK_CUR - Set position to current location plus offset.
- 	 * 							SEEK_END - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
+ 	 * @param integer $whence	SEEK_SET - 0 - Set position equal to offset bytes
+ 	 * 							SEEK_CUR - 1 - Set position to current location plus offset.
+ 	 * 							SEEK_END - 2 - Set position to end-of-file plus offset. (To move to a position before the end-of-file, you need to pass a negative value in offset.)
  	 * @return boolean TRUE if the position was updated, FALSE otherwise.
  	 */
 	function stream_seek ( $offset, $whence )
 	{
-		return fseek($this->opened_stream,$offset,$whence);
+		return !fseek($this->opened_stream,$offset,$whence);	// fseek returns 0 on success and -1 on failure
 	}
 
 	/**