josm runs out of memory after clicking "upload", upload is impossible

[Cobra]

I can't reproduce this reliably yet, but it happened several times now.

Immediately after clicking the upload button, josm consumes as much cpu and ram as possible until a "out of memory" message pops up. The upload dialog doesn't open but josm stays usable. I have to save the osm layer and restart josm to upload it.

I'll try to investigate this further but this may take some time.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2011-07-04 01:31:38
Last Changed Author: stoecker
Revision: 4201
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-07-04 00:07:05 +0200 (Mon, 04 Jul 2011)
Last Changed Rev: 4201

Identification: JOSM/1.5 (4201 en)
Memory Usage: 647 MB / 910 MB (564 MB allocated, but free)
Java version: 1.6.0_24, Sun Microsystems Inc., Java HotSpot(TM) 64-Bit Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: ImproveWayAccuracy (26174)
Plugin: PicLayer (26174)
Plugin: alignways (26174)
Plugin: contourmerge (25626)
Plugin: measurement (26174)
Plugin: openstreetbugs (26174)
Plugin: openvisible (26174)
Plugin: proj4j (26174)
Plugin: reltoolbox (26174)
Plugin: reverter (26174)
Plugin: terracer (26174)
Plugin: undelete (26242)
Plugin: utilsplugin2 (26174)