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Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

here is one sample image for the scenario .This is not only for this site but also other sites having the same issue.but fine with other browsers. Please refer the link with firefox and also other browsers

Tisot Discovery

Have you tried Firefox Safe Mode?

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}

yes i have run firefox in safe mode and i`m not blocking any content and also no addons installed.padlock icon is not related to this issue i guess.it is for SSL verification

Is this with just those websites, or are there others as well?

https://support.mozilla.org/kb/Clear+Recent+History#w_how-do-i-remove-a-single-website-from-my-history

Remove History For One Site

Open the History Manager <Control><Shift> H. In the search bar, enter the name of the site. Right-click on one of the listings and select Forget About This Site. This should remove all information, including any passwords / settings.

ya i have deleted the cache as wel.this is not only for these sites is a common issue in firefox i guess.i need to how we can over come these issue in firefox. because it is not happening in other browser

The alt text is normally displayed as a placeholder when Firefox fails to load an image.

Are those images loaded via JavaScript (XHR)? Are there possible server redirects?

Did you check the Web Console for related messages and the timings in the Network Monitor?

• https://developer.mozilla.org/en/Tools/Web_Console
• https://developer.mozilla.org/en/Tools/Network_Monitor