If you navigate to the following yelp.com result, JavaFX freezes up the browser indefinitely and also spikes cpu for 2 cores for 3+ minutes. YourKit reveals that QuantumRenderer-0 and the JavaFX Application Thread run are running continuously during that time:

http://www.yelp.com/biz/sushi-king-henrico-2

Other browser seem to have no problems with this link.

Here is the console output:

Outstanding resource locks detected:
D3D Vram Pool: 189,613,654 used (70.6%), 189,613,654 managed (70.6%), 268,435,456 total
1033 total resources being managed
average resource age is 1.6 frames
0 resources at maximum supported age (0.000000)
798 resources marked permanent (77.300000)
1 resources have had mismatched locks (0.100000)
1 resources locked (0.100000)
1005 resources contain interesting data (97.300000)
0 resources disappeared (0.000000)

Outstanding resource locks detected:
D3D Vram Pool: 191,208,710 used (71.2%), 191,208,710 managed (71.2%), 268,435,456 total
1050 total resources being managed
average resource age is 1.8 frames
0 resources at maximum supported age (0.000000)
798 resources marked permanent (76.000000)
3 resources have had mismatched locks (0.300000)
3 resources locked (0.300000)
1021 resources contain interesting data (97.200000)
0 resources disappeared (0.000000)

Outstanding resource locks detected:
D3D Vram Pool: 195,010,118 used (72.6%), 195,010,118 managed (72.6%), 268,435,456 total
1440 total resources being managed
average resource age is 1.7 frames
0 resources at maximum supported age (0.000000)
798 resources marked permanent (55.400000)
11 resources have had mismatched locks (0.800000)
11 resources locked (0.800000)
1403 resources contain interesting data (97.400000)
0 resources disappeared (0.000000)