It appears neither you nor your staff have been reading the ticket carefully. What I was saying was the proxies work fine for about 10 minutes, then they completely die for like a minute. If I take Scrapebox proxy tests outside of that minute, the proxies appear to be working fine. But then the interruption occurs and all my harvesting goes to naught. I have to constantly be watching Scrapebox in order to resume harvesting. It's impossible to work with the proxies under the circumstances, and your proxy tests help nothing.
And it's not just a search engine block, as the timeouts happen when I do virtually anything else thru the proxies, like web browsing, posting, pinging. Anyway, here's one for you: how do you explain that they time out exactly at the same moment for all three search engines, Google, Yahoo and Bing?