Use Java 6.35. I have installed and re-installed several programs; Browsers: IE9, Firefox and Opera; Other: Java, Adobe Flash and several others. I have deleted cookies and cache for all browsers and checked the 500 other things they suggest. I have had very good luck with Java 6.35. I currently am running Vista Home Premium and using Opera 12.00. I play on Pogo everyday. It seems a lot of people are having the same issues regardless of their Operating System or Browser. If this works for you, don't forget to disable the automatic update or it will try to update to the current version every time. Good Luck.
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft® Windows Vista Home Premium, Service Pack 2, 64 bit
Processor: Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz, Intel64 Family 6 Model 23 Stepping 10
Processor Count: 2
RAM: 3998 Mb
Graphics Card: Mobile Intel(R) 4 Series Express Chipset Family, 1807 Mb
Hard Drives: C: Total - 292471 MB, Free - 116351 MB; D: Total - 12768 MB, Free - 1433 MB;
Motherboard: Quanta, 3627
Antivirus: AVG Anti-Virus Free Edition 2013, Updated and Enabled
Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft® Windows Vista Home Premium, Service Pack 2, 64 bit
Processor: Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz, Intel64 Family 6 Model 23 Stepping 10
Processor Count: 2
RAM: 3998 Mb
Graphics Card: Mobile Intel(R) 4 Series Express Chipset Family, 1807 Mb
Hard Drives: C: Total - 292471 MB, Free - 116351 MB; D: Total - 12768 MB, Free - 1433 MB;
Motherboard: Quanta, 3627
Antivirus: AVG Anti-Virus Free Edition 2013, Updated and Enabled