[ic] Buy Now

David Christensen david at endpoint.com
Wed Feb 16 08:40:34 UTC 2011

Hi Frank!

> Customers complain that nothing happens when they click "Buy Now". I
> think it may be on MSIE only and I cannot reproduce it. Slow lines are
> suspected.

[details snipped]

Is this *all* customers having issues with MSIE, or just select ones?  This sounds an awful lot like the user is getting falsely identified as a search engine/robot due to the User-Agent string matching one of the RobotUA patterns, and thus not being assigned a session.  I would look at the webserver logs to identify the UA string for the requests in question and compare against the list of known RobotUAs from robots.cfg (or whereever in your installation the RobotUA is defined.).  In particular, the Ask toolbar (UA fragment: AskTB) has been known to cause issues.

The fix currently is to update your robots.cfg file the latest version available in the Interchange Git repo, however since you're on 5.2, I think you're missing the NotRobotUA directive and corresponding logic to explicitly allow sessions when matching any of the NotRobotUA patterns.  In any case, there may be patches floating around specifically adjusted for IC 5.2; you could also look at migrating your site to a newer version of IC.


David Christensen
End Point Corporation
david at endpoint.com

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