Ah. Perhaps it's only projects which are not in any particular category (not sure about this JQL but in SQL, you often have to test for null explicitly in addition).

this JQL is not about any categories, it's about concrete projects.
this JQL means: issues from all projects which are not listed in brackets match it
so all issues from all unlisted projects should be passed over webhook to you

I don't think problem is in this JQL or in webhook setup.

Most likely it's some bug in JIRA or some problem on networking level.

I try to check jira log file if there is some evidence/exception from webhook code.

I found next error in jira log file

2013-02-21 04:24:36,139 http-bio-8080-exec-39241 WARN jfclere 264x5253757x1 f19gom 10.33.144.3,10.5.105.5 /secure/DeleteComment.jspa [jira.plugins.webhooks.WebHookRegistrationManager] Failed to publish web-hooks for event com.atlassian.jira.event.issue.IssueEvent

java.lang.NullPointerException: null value

  at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)

This concrete error is from "Delete Comment" action, but maybe something similar may cause webhook problem during "Issue Create" too (I have got only limited log history available to check .

Seems this problem is known as https://jira.atlassian.com/browse/JRA-31458 and fixed in JIRA 5.2.6 (we are on 5.2.5 now).

I have plan to upgrade jira to latest version during next two or three weeks, so hope this issue will be fixed then.

Hi David, new version of jira is deployed. Should you check if this problem is patched by new release or not please?

I created https://issues.jboss.org/browse/XNIO-193 and no notification arrived.

Hi David Lloyd, any news around this? JIRA has been upgraded to 6.x series in meantime, so is it better now?

Looking at IRC history I see new notifications for XNIO and REM3. I think this might be fixed! Thanks.

Great, thanks, feel free to contact me in case of any problems.