Opera DSK-359701

Version: 11.61
Build: 1250
Operating system: Windows 7
Platform: PC

Summary: A page with javascript eats memory 8 MB/sec and crashes opera

URL: http://openstreetmap.us/live/

Steps to reproduce
===================
1. Open task manager and find opera process
2. Open http://openstreetmap.us/live/
3. See how much memory Opera takes: 8 megabytes a second. After several
minutes it crashes, unable to write log file.

Expected result
===============
The page should have no or little effect on memory consumption, like in
Firefox, for example.

Actual result
=============
Opera runs out of memory and crashes, unable to file bug report.

HTTP_USER_AGENT: Opera/9.80 (Windows NT 6.1; U; ru) Presto/2.10.229
Version/11.61
HTTP_ACCEPT_LANGUAGE: ru,ru-RU;q=0.9,en;q=0.8


PLUGINS:
===========
Adobe Acrobat (Adobe PDF Plug-In For Firefox and Netscape 10.1.2)
nppdf32.dll
Shockwave Flash (Shockwave Flash 11.1 r102) NPSWF32.dll
Silverlight Plug-In (4.0.50401.0) npctrl.dll
Wacom Dynamic Link Library (Wacom Dynamic Link Library) npwacom.dll
WacomTabletPlugin (Plugin for Wacom tablets.) npWacomTabletPlugin.dll


SCREEN:
===========
Resolution: 1280x1024
ColorDepth: 32


Browser JavaScript:
Opera Desktop 11.60 core 2.10.229, March 13, 2012. Active patches: 179