Firstly, tell you that I am really grateful about your comments and your help :).
I haven’t answered before because we were updating Varnish from 3.0.3 to Varnish 3.0.5 to be sure this is not a bug from Varnish version.
Hrm. Not being able to disable plugins makes it hard to debug.
I know, but surely I can modify the plugin and see when the purge is send and I see (using a mail sent) that the purge is call.
Can you make a sub-page off the main site (without telling anyone ?? ) and open comments to see if that works?
In the main page I have no comments template done, this is only an index.
I have tested it again step by step and the results are:
* I create a page and all works correctly page now appears in my session and in other PCs.
* I have submit a commment from a different PC, the comment doesn’t appear there but it appears in the PC with session initiated
Also can you list what plugins you’re using? Just the ones that are network wide, and active on ALL the sites having the problems.
- All In One SEO Pack
- Block Specific Plugin Updates
- Dan’s Avatar Thingy
- Jetpack por WordPress.com
- jQuery Archive List Widget
- Link Manager
- Most Shared Posts
- Multisite Plugin Manager
- Network Latest Posts
- NextGEN Gallery
- Simple Local Avatars
- Twitter Tracker
- WordPress Admin Notepad
And this one.
Oh and what theme(s)!
They are some themes, really old but working and more or less standards.
I am going to continue debugging seeing your code, the action of comments is well received so the problem is in the cURL petition.