Only refresh automatically in IE8.0 In other (FF 3.6, Opera 10.6, Chrome 4.0, Safari 5.31) does not work.

I want to note that without reading the documentation to understand the interface that is that it is impossible!
http://www.zabbix.com/documentation/1.8/manual/config/screens_and_slide_shows

It can be easily confused (that above privacy for me and has happened).
I have spent much time yet to understand that there is-that made it to the real problem - the difference in browsers.

It is suggested that like to do something like this:

Rename the "Update interval (in sec)" to the "Default update interval (in sec)"
Rename the "Delay" to the "Individual delay"

Tabular form and unify - the notion of "Delay" <-> "Default update interval". !!!!

Where ever it should be noted that the interval of less than 5 seconds will be counted as 5 seconds.

Also note the documentation
http://www.zabbix.com/documentation/1.8/manual/about/what_s_new_1.8.3?do=show#improved_slideshow_refresh_rate_selector
I recommend to understand and unify the concepts, so that they conform to those used in the interface.

You like this?:
Refresh time multiplier <> refresh (what_s_new_1.8.3) <> Update interval <-> Delay