I recently upgraded to NIS 2010 and noticed a problem where typing in gmail or most other text boxes in IE8 would cause random typed characters to not register. I am certain the NCO BHO plugin is the cuprit because I ran the following experiment:
1. I recorded a macro of me correctly typing "The quick brown fox jumped over the lazy dog." - this ensured that any errors made were not made by me.
2. I ran the macro in the gmail compose window and let it loop 50 times continuously - this allowed me to see that random characters were not registering.
3. After doing some google searching and finding others with this same problem, I found out that calling IE8 from a command prompt disables most plugins. When I ran IE8 in this manner, all keypresses registered correctly.
4. I then ran IE8 with all plugins enabled and then started disabling them 1 by 1, running the macro after disabling each plugin. Eventually I found out that the culprit was the Symantec NCO BHO plugin.
Right now I have the plugin disabled and am not experiencing any issues with dropped keystrokes, but it would be nice if this issue would be fixed so that I could use the plugin.
I am running IE8 under Windows Vista Business x64.