chromium hangs my computer when it (chromium) starts

[mlg7]

0. tell the browser to save opened pages at exit and open saved pages at start.

1. code for a while; also, read stackoverflow, listen to some music, find its lyrics, read some news and follow some links on the news site. Whenever you need something different, open a new window; while searching for that something, open all search results and links in new pages; do not close the pages. After a while, you will have a number of Chromium windows (I have 19 now, with the number of tabs ranging from 4 to 32).

2. close the browser with Ctrl-Shift-Q

3. run Eclipse and Code::Blocks (this is what I use for Android NDK programming). Run SMPlayer with some music. Run Tortoise HG and open some files in Meld. Run another browser (in my case it was red-yellow-green Google Chrome, *different* from blueish-blue-blue Chromium -- I have both). Optionaly, open a pdf with lyrics, look at it and leave opened until better times.

4. finally, run Chromium.

Expected: It should start

Actual: it opens windows but draws nothing. The HDD LED blinks; the mouse does not move; no reaction on keyboard.

It may show a dialog proposing to kill some pages; if you don't agree immediately, your PC will lose responsiveness.
Once I had to reboot the computer; the last time I managed to close Google Chrome and thus freed some memory.
It's interesting that it reported newly opened pages as hanging.

It is possible that some pages start downloads. At least, I see messages about unfinished downloads when I try to close the browser. (And some pages may be showing poker or even porno -- I have no idea what they open in the background.)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: chromium-browser 17.0.963.56~r121963-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-13.55-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic i686
Architecture: i386
Date: Fri Mar 2 13:51:22 2012
Desktop-Session:
 DESKTOP_SESSION = gnome-classic
 XDG_CONFIG_DIRS = /etc/xdg/xdg-gnome-classic:/etc/xdg
 XDG_DATA_DIRS = /usr/share/gnome-classic:/usr/share/gnome:/usr/local/share/:/usr/share/
Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110426)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: chromium-browser
UpgradeStatus: No upgrade log present (probably fresh install)
chromium-default: CHROMIUM_FLAGS=""

[dino99 (9d9)]

Natty have reached EOL since a while and that issue is not reproducible with recent version(s)