Ok... I can finally tell you about his problem/bug/issue.
The bug is caused by a bad firewall rule at the server level. Specifically, we were getting false positives for a "SQL Injection Attack" for anyone who, in their content, used the terms "select" and "from" in the same text field. For example if you sent someone the following PM, or tried to post:
"
I recommend you select the best cultivars from Japan"
you would generate an error if you tried to post it... and if you continued to try to post it (five times) you would get blocked from the site for an hour. And it applied to any combination of letters that included "select" and "from". Selection, selective, selects - would all trigger the error, as would "frommage" which is a term that
@sorce uses frequently
The reason behind this rule is simple "select from" is an SQL statement, and (without getting into more tech details) the server firewall was particularly sensitive to the use of those letters, in that combination.
However... our site does not allow active code to be executed from text fields. All text field content is rendered to BB code and never gets close to the database. So the firewall was flagging that text erroneously - because it was just innocuous text and not active code. Bad firewall rule writing. False positives. And the longer the post you would write, the more likely you would be to use the letters "select" and "from" in one field.
So... I have whitelisted the rule in our firewall rules, so you can go back to saying "select" and "from" in your posts. The rule in this case is maintained by a 3rd party (open source code) and I have notified them of the issues related with their shotgun approach to a rifle problem. The firewall remains... but this one rule has been sidelined for the time being