IllegalStateException: Timer already cancelled in continuos download plugin

[anonymous]

What steps will reproduce the problem?

1. simply following a way track 8 km with low level zoom

What is the expected result?
no bug report and normal ram load

What happens instead?
bug on continuos downlod plugin and high ram consuming

Please provide any additional information below. Attach a screenshot if possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-06-28 01:34:43
Last Changed Author: akks
Revision: 6037
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-06-27 20:26:18 +0200 (Thu, 27 Jun 2013)
Last Changed Rev: 6037

Identification: JOSM/1.5 (6037 it) Linux Ubuntu 13.04
Memory Usage: 351 MB / 419 MB (238 MB allocated, but free)
Java version: 1.7.0_25, Oracle Corporation, Java HotSpot(TM) Server VM
Dataset consistency test: No problems found

Plugin: AddrInterpolation (29435)
Plugin: FastDraw (29596)
Plugin: ImportImagePlugin (29531)
Plugin: OpeningHoursEditor (29435)
Plugin: PicLayer (29601)
Plugin: SimplifyArea (29435)
Plugin: buildings_tools (29596)
Plugin: continuosDownload (28565)
Plugin: dataimport (29435)
Plugin: download_along (29435)
Plugin: geochat (29592)
Plugin: geotools (29435)
Plugin: irsrectify (29210)
Plugin: jts (29613)
Plugin: log4j (29435)
Plugin: mapdust (29525)
Plugin: mirrored_download (29643)
Plugin: multipoly-convert (29435)
Plugin: namemanager (29435)
Plugin: opendata (29706)
Plugin: openstreetbugs (29435)
Plugin: print (29529)
Plugin: proj4j (29435)
Plugin: reverter (29663)
Plugin: scripting (30540)
Plugin: tageditor (29435)
Plugin: tagging-preset-tester (29435)
Plugin: terracer (29623)
Plugin: turnrestrictions (29435)
Plugin: undelete (29555)
Plugin: utilsplugin2 (29672)
Plugin: walkingpapers (29480)
Plugin: waydownloader (29435)
Plugin: wayselector (29435)
Plugin: wikipedia (29523)

java.lang.IllegalStateException: Timer already cancelled.
	at java.util.Timer.sched(Timer.java:397)
	at java.util.Timer.schedule(Timer.java:193)
	at org.openstreetmap.josm.plugins.continuosDownload.DownloadPlugin.zoomChanged(DownloadPlugin.java:87)
	at org.openstreetmap.josm.gui.NavigatableComponent.fireZoomChanged(NavigatableComponent.java:128)
	at org.openstreetmap.josm.gui.NavigatableComponent.zoomNoUndoTo(NavigatableComponent.java:413)
	at org.openstreetmap.josm.gui.NavigatableComponent.zoomTo(NavigatableComponent.java:391)
	at org.openstreetmap.josm.gui.NavigatableComponent.zoomTo(NavigatableComponent.java:417)
	at org.openstreetmap.josm.gui.MapMover.mouseDragged(MapMover.java:130)
	at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:320)
	at java.awt.AWTEventMulticaster.mouseDragged(AWTEventMulticaster.java:319)
	at java.awt.Component.processMouseMotionEvent(Component.java:6553)
	at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3339)
	at java.awt.Component.processEvent(Component.java:6274)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4861)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4509)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
	at java.awt.Container.dispatchEventImpl(Container.java:2273)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:694)
	at java.awt.EventQueue$3.run(EventQueue.java:692)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:708)
	at java.awt.EventQueue$4.run(EventQueue.java:706)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)