即使根据gutsy的快速设置指南安装了Flash插件，但Myeclipse6帮助并不能识别出来，从而不能播放嵌套在帮助文档中的Flash视频，必须安装Adobe的FlashPlayer！

1、在这里去下载：

http://www.adobe.com/products/flashplayer/

2、下载后，在Shell下:

tar xzf install_flash_player_9_linux.tar.gz

sudo ./flashplayer-installer

3、下面是安装时的提示:

Copyright(C) 2002-2006 Adobe Macromedia Software LLC. All rights reserved.

Adobe Flash Player 9 for Linux

Adobe Flash Player 9 will be installed on this machine.

You are running the Adobe Flash Player installer as the "root" user.

Adobe Flash Player 9 will be installed system-wide.

Support is available at http://www.adobe.com/support/flashplayer/

To install Adobe Flash Player 9 now, press ENTER.

To cancel the installation at any time, press Control-C.

NOTE: Please exit any browsers you may have running.

Press ENTER to continue...

//输入firefox的安装地址: /usr/lib/firefox

Please enter the installation path of the Mozilla, SeaMonkey,

or Firefox browser (i.e., /usr/lib/mozilla): /usr/lib/firefox

dir= /usr/lib/firefox

----------- Install Action Summary -----------

Adobe Flash Player 9 will be installed in the following directory:

Browser installation directory = /usr/lib/firefox

Proceed with the installation? (y/n/q): y

Installation complete.

Perform another installation? (y/n): n

Please log out of this session and log in for the changes to take effect.

The Adobe Flash Player installation is complete.

OK,重启Myeclipse后就可以观看帮助里的Flash了。