Getting Page Not Found when trying to Post

[JohnS]

For some time I have been getting an occasional Page Not Found when posting. There are no other problems with the forum. Some days it is almost impossible to post, other days there are only a few such errors.
I am getting no other problems with any website. There is never a problem when previewing the post only when you hit the post button.
There are never any problems when reading posts, and I have not come across any other issue when administering the website.
Any ideas about what could be causing this.
Thanks
John

[Kindred]

smf version?
mods installed?
url?

[JohnS]

Thanks for your reply Kindred.
Sorry, should have said. Version 2.0.9, no mods other than the theme which is my own. www.cumbriafhs.com

That just gave me a thought I will put my theme back to the default just to check it is nothing in that. Though as it works sometimes and not others I can't see how it could be the theme.

[Kindred]

when you get the page not found, what do you do?  just refresh or do you go back and click post again?

what is the URL of the page not found? does it actually MATCH the URL of the page when it gets successfully posted?

[JohnS]

Normally I go back and post again. If I have gone via preview the data is normally but not always still there. If I go back after just posting without previewing, the form is blank and I have to put it in again.
Yes I have carefully checked the URL's from successful posts, the URL the post button is pointing to and the URL displayed in the browser on Page Not Found. They all look OK.

[Mstcool]

Might have something to do with ur host. Who's ur host?

[JohnS]

Possibly, host is Kualo.
When it happened a month or so ago, they scoured the logs for anything that could indicate an issue, but found nothing.
Other frequent posters say they do not get it, which tends to rule out the host and point to either the ISP or my PC.
But I get no other problems and certainly no problem posting here.