not sure yet, but some presets definitely not OK Puntuado con 3 de 5 estrellas

I'll give it a tentative semi-positive assessment. First, to echo the warning posted months ago by RevSyd: the "strongest" preset configuration that exhibited no problems was the one called Courteous. Beyond that I instantaneously got squawks from Gmail (connectivity problems, Google whined) and - ironically - the Firefox Add-Ons website (it would not load at all). Unacceptable, to say the least.

On the other hand, set to its Courteous configuration, I *think* it causes faster page loads and, so far at least, no complaints. Hard to say, because load times for a particular page will vary anyway.

To be fair and complete: I have seen similar counterproductive things occur in the past as well, with other add-ons of similar purpose installed in the Firefox version of the time.

Esta valoración es de una versión anterior del complemento (3.9.1Lite). 

Hi, Are you able to post some more relevant info? I think this issues can be specific to your ISP, as others don't encounter same problems. Any additional info is welcomed on marek@wips.com . Thanks