Some time ad appear and some time not

[memorygreetings]

Hello,

There is an issue with my blog. I have installed 300 * 250 on home page. There is an issue that some times when page is loaded ad appears and some times it does not.
On rest of the pages ad is visible all the time. I do not understand what is the reason behind it.

Please suggest me appropriate solution for that
Thanks

Joey

[edited by: incrediBILL at 4:55 am (utc) on Nov 17, 2011]
[edit reason] no links please [/edit]

[SteveWh]

After you load the home page, use your browser's View Source to look at its source code, and make sure the code for the advertisement is there. Do that many times to make sure it is always there.

If the ad code is always in the page, but the ad doesn't appear, then (assuming this is AdSense) the problem might be that Google doesn't have an appropriate ad to display on that page at that moment.

[htmlbasictutor]

I would agree with SteveWh, if it's a third party ad (not just AdSense) there maybe be no ad available or the server where the ad is coming from is slow/stalled.