Keep loosing sessionID in under 4 minutes

[DeZiner]

After several complaints of errors from users I setup a page to track orders as they are made. I notice that seven out of 10 users seem to lose the sessionID after only 4 minutes or so and a new one is assigned. Rather than track by session ID I decided to use CreateUUID()as my unique identifier. Same thing though. What's odd is half the people are just fine. Could this be a browser or server issue??? Here's my Application.cfm:

<cflock type=&quot;exclusive&quot; name=&quot;searchupdate&quot; timeout=&quot;10&quot;>
<cfapplication name=&quot;searches&quot; clientmanagement=&quot;yes&quot; sessionmanagement=&quot;yes&quot; setclientcookies=&quot;yes&quot; clientstorage=&quot;cookie&quot; SESSIONTIMEOUT=#CreateTimeSpan(0,0,30,0)#>
<cfparam name=&quot;Session.product&quot; default=&quot;0&quot;>
<cfparam name=&quot;Session.user&quot; default=&quot;&quot;>
<cfif not isdefined(&quot;session.trackuser&quot;)>
<cfset session.trackuser=#CreateUUID()#>
</cfif>
</cflock>

Is it OK to use the cfset there or should it be a param or something else?

Thanks again. DeZiner
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