Ajax server error with cell phones

[bob9999]

Hi there.  I have a weird issue that appears to occur when a cell phone has an networking bandwidth issue.  When the phone is on a home wi-fi network with great signal or cell tower all is fine and my application works perfectly.  I managed once to get the ajax server error when I pressed a function before the other request was completed like if the error occurred on the original request.  My client is getting the issue pretty much all the time on the road on his iPhone with Chrome.

In the server controller I have:

AllowMultipleSessionsPerUser = True
AuthBeforeNewSession = false
RestartExpiredSession = false
UseAjaxNotify = true
AjaxErrorMode = emAlert

I can trim my app more so then less bandwidth is required but there is still risk with these mobile devices.  Is there anyway to turn off the ajax errors so then if the user is continuously clicking the old requests just die or if there is an ajax error nothing is displayed to user and all just appears to be slow?

Any other ideas would be appreciated.  

Cheers!