[development] autocomplete.js and http error 0

[Roger Leigh]

I'm working with an autocomplete text field in a module, and some users 
were getting an alert error, "An HTTP error 0 occured".

I was finally able to reproduce this error, not only on my form but on a 
standard CCK form as well; if you click the form submit button while the 
autocomplete is retrieving entries (the 'blue wheel' is present), it 
triggers the error. Surprisingly, I couldn't find a lot of info on a 
drupal search, though I did see some related reports in other projects.

Looking at the autocomplete.js file, I see the alert at line 285. 
Obviously I can change it here, but always hate to hack the core.

Any ideas?

Regards,

Roger