I've recently been getting this message 'Shockwave Flash maybe busy' quite a lot when i open my email, clicking to opening an email

Question

Quite recently I've been having the following message of varying URL's informing me of Unresponsive Scripts. Also, I've started to have problems with viewing videos at YouTube and slowness. Can you advice me?
Below you will see a list of things I saw on my Add-on's and updates. I'm not sure why I have some of the *Unknown* Add-on's. Can you tell me? I wasn't aware of them before and certainly don't remember downloading any add-ons to my computer.
I have these two JAVA's installed in my computer I don't know what they are for and whether I need them both or at all. Can you advice?
JAVA 7 UPDATE 45
JAVA FX 2.1.1
This is an example of the *unresponsive script* messages I seem to getting alot of recently:
"A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.
Script: https://mail.google.com/_/scs/mail-static/_/js/k=gmail.main.en.IrCl4h8mIb4.O/m=m_i,t,it/am=vyAOkkLG2oERh2EH9gNK__2fXRY74X9dmTwAoQIQ2An-Zv-A6gc2KDvO/rt=h/d=1/rs=AItRSTMK8MGJt5uy3m-DsTM70w6ODVhuAQ:354"
Shockwave Flash was recently updated (see below) so can't understand why I'm now getting these messages. Please help me. Tell me how to make my computer get back to it's 'normal no problem self'
I wasn't having any issues until quite recently. What was the changes that prompted this.
Shockwave Flash 11.9.900.117
last updated 8.-10-2013
The following are in the Add-on Manager, does that mean they are on my computer?
Java Deployment Toolkit 7.0.450.18
NPRuntime Script Plug-in Library for Java(TM) Deploy
Java(TM) Platform SE 7 U45
Next Generation Java Plug-in 10.45.2 for Mozilla browsers
I have these two JAVA's installed in my computer I don't know what they are for and whether I need them both or at all. Can you advice?
JAVA 7 UPDATE 45
JAVA FX 2.1.1
Foxit Reader Plugin for Mozilla 2.0.0.1102
Foxit Reader Plug-In For Firefox and Netscape
Unknown Plugins:
Microsoft® DRMDRM Netscape Network Object unknown
Windows Presentation FoundationWindows Presentation Foundation (WPF) plug-in for Mozilla browsers unknown
Foxit Reader Plugin for MozillaFoxit Reader Plug-In For Firefox and Netscape unknown Research
RockMelt UpdateRockMelt Update unknown
RealPlayer Download PluginRealPlayer Download Plugin unknown
RealJukebox NS PluginRealJukebox Netscape Plugin unknown
AVG SiteSafety pluginnpsitesafety unknown
Google UpdateGoogle Update unknown
These plugins are up to date
Windows Media Player Plug-in Dynamic Link LibraryNpdsplay dll 3.0.2.629 Up to Date
RealPlayer(tm) HTML5VideoShim Plug-In (32-bit) RealPlayer(tm) HTML5VideoShim Plug-In 15.0.6.14 Up to Date
RealNetworks(tm) Chrome Background Extension Plug-In (32-bit) RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In 15.0.6.14 Up to Date
VLC Web PluginVLC media player Web Plugin 2.1.0 2.1.0.0 Up to Date
Java Deployment Toolkit 7.0.450.18NPRuntime Script Plug-in Library for Java(TM) Deploy 10.45.2.18 Up to Date
Java(TM) Platform SE 7 U45Next Generation Java Plug-in 10.45.2 for Mozilla browsers 10.45.2.18 Up to Date
Shockwave FlashShockwave Flash 11.9 r900 11.9.900.117 Up to Date
Many thanks

Answer 1

Try with Flash clean install
*http://forums.adobe.com/thread/928315
for more
*http://forums.adobe.com/thread/1215076