Mine just started doing this after having to reinstall the drivers.  My guess is that a former uninstall did not completely uninstall and we need to crawl through the registry after uninstaling and delete DELL keys

Folks - Jeff Here

I purchased a Wireless Dell V305 a few months ago. I am running it as Wireless and everytime the V305 loses it's Wireless connection,

I get the Dell Web Gateway Has Stopped Working failure. I suspect if it were connected hard-wire to a network, it would do the same.

I cannot test that scenario, but if you have/had a Dell printer, regardless of your computer manufacturer that's an easy solution.

If that is not your scenario, see if you can uninstall the Dell Web Gateway via normal add/remove programs function in the Control panel.

If not, please respond to me or another Dell Forum Tech.

    Jeff 

These posts are a little dated...I am having the same issue (message pop up) and I was wondering if a fix was ever found...?

Thanks