ARE you using an XP computer?
Which of the items in "Things To Do" did you do? You mentioned that you performed a "few".. The suggestion was to perform them all.
Conflicts with spyware programs and standard programs that run at startup can easily cause issues with webpages. Cleaning out the spyware using the ALL of the tools I suggested and eliminating unnecessary startup programs and services and junk files eliminates conflicts that could cause problems with connections. Likewise, the "Temp" folders and "Temporary Internet Files" folders can cause problems with Internet Explorer.
The warning messages you have provided could be related to a number of issues including the ones mentioned by Tomron above. In addition to that, a number of image problems and the security messages you're seeing can be fixed by updating your version of Java and the Script engine from the instructions below. Please follow the instructions:
Click on the link to Sun's Java below, then click on the ''Download JRE 5.0 Update 6'' download link that is in the ''JRE 5.0 Update 6 includes the JVM technology'' section. Download the full ''Windows Offline Installation'' file to your desktop,(about 15 MB), scan it with your antivirus (just to be sure it's clean). Once that's done, if you've already got a Sun Java version on the computer, open the Control Panel, double click on the "Add/Remove Programs" section, then uninstall all previous version of the J2SE Java listed there. Once that's done, then install Java 1.5 from the downloaded installer.
AFter that, download and install the updated Script engine from the appropriate link below:
Windows Script 5.6 for Windows 2000 and XP
At the link above, you'll need to validate your version of XP which isn't a problem as long as its legal.
After everything is installed, then open the Control Panel, double click on the ''Internet Options'' icon, then click on the ''Advanced'' tab. When that loads, scroll down to the ''Java(Sun)'' section and make sure there is a CHECK mark next to: ''Use Java,....''. Click on Apply. Then scroll to the ''Multimedia'' section and place a CHECK mark in the ''Play Sounds In Web Pages'', ''Play videos in Web Pages'', & ''Show pictures'' box and UNCHECK the box next to ''Show download Placeholders:'', then click on Apply, then Ok.
Hope this helps..