Thanks for your reply and valuable insight about Firefox.
I'd try to set the time out limit. This may be due to resetting of my external hard-drive on which I've set the Windows temp and tmp environment values but I'm not sure.
About the regular expression matching, my website is having 18000 or so pages it's a joomla CMS based so the pages are identified using id:http://www.*....&id=40000&..
Here 40000 is unique value identifying unique page.
What I want is to check a range of pages say where id>=30000 and id<50000 in one validator "batch".
Next batch I'd like to run for id between 50000 and 70000.
One reason is due to the memory intake of CSE, secondly wait time for it to finish for full site will be longer
Even in regex it won't be possible to specify range say between 30000 - 50000.
I'd be happy if there were (also) an option for specifying an external perl, php or any script/exe which when passed an url as first parameter would return 0 or 1 indicating whether target should be processed or not. There is good chance I'd be taking up a few other website projects like this so I'd be needing them in future. More so because all CMS based websites would benefit with this type of support, because the there are no keywords in the CMS based urls only numeric codes.
For the search on your website, I've searched about the issues I raised in two posts as well as a few others. I got nothing. It's really not useful at all.
I love this CSE and your website because you've filled them with lot of tips, tricks and insight.
I also want to thank you for suggesting Direct Access utility which is really helpful. Let me restrict off-thread talk here.