I can still recreate this bug by going to the URL in Firefox. Upon above request I did the following:

1. I opened Applications | Accessories | Terminal
2. I gave command sudo force_start=1 /etc/init.d/apport restart
3. I gave command gksudo firefox
4. I entered the URL
5. To my surprise Firefox displays the page.
6. I closed Firefox and reopened the application from the menu.
7. I retyped the URL, Firefox closed down again.

This is the output from the non crashed session:

** Message: NP_Initialize
** Message: NP_Initialize succeeded
** Message: totemPlugin [0xa53ee18]
** Message: Init mimetype 'video/quicktime' mode 1
** Message: GetScriptableNPObject [0xa53ee18]
** Message: totemNarrowSpacePlayer [0xa790610]
** Message: Base URI is 'http://www.flagpoles.com.mx/VersionIngles/Ingles.htm'
** Message: Real mimetype for 'video/quicktime' is 'video/quicktime'
argv[0] src ../Movies/OndearTolucaP.mov
argv[1] autoplay false
argv[2] loop false
argv[3] controller false
argv[4] playeveryframe false
argv[5] href OndearTolucaDR.mov
argv[6] target myself
argv[7] pluginspage http://www.apple.com/quicktime/download/index.html
argv[8] bgcolor #08A610
argv[9] height 136
argv[10] width 160
** Message: SetHref 'OndearTolucaDR.mov' has-extensions 0 (url: '' target: '')
** Message: mSrcURI: ../Movies/OndearTolucaP.mov
** Message: mCache: 0
** Message: mControllerHidden: 1
** Message: mShowStatusbar: 0
** Message: mHidden: 0
** Message: mAudioOnly: 0
** Message: mAutoPlay: 1, mRepeat: 0
** Message: mHref: OndearTolucaDR.mov
** Message: mTarget: 
** Message: Launching: /usr/lib/totem/gstreamer/totem-plugin-viewer --plugin-type narrowspace --user-agent Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.14) Gecko/2009090216 Ubuntu/9.04 (jaunty) Firefox/3.0.14 --mimetype video/quicktime --no-controls 
** Message: Viewer spawned, PID 6337
** Message: Initial window set, XID 3e005b2 size 160x136
** Message: No viewer proxy yet, deferring SetWindow
** Message: GetScriptableNPObject [0xa53ee18]
** Message: NewStream mimetype 'video/quicktime' URL 'http://www.flagpoles.com.mx/Movies/OndearTolucaP.mov'
** Message: Viewer not ready, aborting stream
** Message: Viewer DBus interface name is 'org.gnome.totem.PluginViewer_6337'
** Message: NameOwnerChanged old-owner '' new-owner ':1.6'
** Message: Viewer now connected to the bus
** Message: ViewerSetup
** Message: Calling SetWindow
Viewer: SetWindow XID 65013170 size 160:136
TotemEmbedded-Message: Viewer state: STOPPED
** Message: SetWindow reply
** Message: ViewerReady
** Message: Stream requested (force viewer: 0)
** Message: IsSchemeSupported scheme 'http': yes
TotemEmbedded-Message: totem_embedded_open_stream called: uri ../Movies/OndearTolucaP.mov, base_uri: http://www.flagpoles.com.mx/VersionIngles/Ingles.htm
Emptying current_uri
totem_embedded_set_uri uri ../Movies/OndearTolucaP.mov base http://www.flagpoles.com.mx/VersionIngles/Ingles.htm => resolved http://www.flagpoles.com.mx/VersionIngles/../Movies/OndearTolucaP.mov
TotemEmbedded-Message: totem_embedded_open_internal 'fd://0' is-browser-stream 1 start-play 1
TotemEmbedded-Message: BEFORE _open
TotemEmbedded-Message: AFTER _open (ret: 1)
TotemEmbedded-Message: Viewer state: PLAYING
** Message: OpenStream reply
** Message: NewStream mimetype 'video/quicktime' URL 'http://www.flagpoles.com.mx/Movies/OndearTolucaP.mov'
** Message: Should be dual type 'video/quicktime', making sure now
** Message: Is not dual type 'video/quicktime'
** Message: Is not playlist: totem_pl_parser_can_parse_from_data failed (len 1144)
** Message: StreamAsFile filename '/root/.mozilla/firefox/9xshl5b4.default/Cache/B15E3ED0d01'
** Message: mBytesStreamed 7297
** Message: DestroyStream reason 0
** Message: URLNotify URL '../Movies/OndearTolucaP.mov' reason 0
TotemEmbedded-Message: Viewer state: STOPPED
TotemEmbedded-Message: totem_embedded_open_internal 'file:///root/.mozilla/firefox/9xshl5b4.default/Cache/B15E3ED0d01' is-browser-stream 0 start-play 0
TotemEmbedded-Message: BEFORE _open
TotemEmbedded-Message: AFTER _open (ret: 1)
** Message: ~totemPlugin [0xa53ee18]
** Message: ~totemNarrowSpacePlayer [0xa790610]
** Message: NP_Shutdown

On this machine the Applications | Games | Four_in_a_Row sometimes dissappears during play as well.