XSS Attempt on here ?

I'm afraid there really isn't enough information in what's shown above for me to determine just what was gong on. I can say there is nothing overly special about the thread you were replying to. There's no imbedded exploit or anything like that in there. The best I can determine is that its some kind of f/p from NoScript.

Any product that "detects" some kind of problem, whether malware, exploit, bad URLs, and even spam content... does so via some kind of fingerprinting or signature. Like any type of detection, there is a chance that f/p can occur. Maybe there was something specific in the combination of your browser, NoScript, the data in your reply, and the fact that you were attaching external content, (the uploaded image attachments), that caused it to trigger the detection.

 

Ah, so you are actually using that tool here then? Yes, changing User Agent can cause unexpected issues. Several functions in the forum software key off of whatever User Agent is passed into them. Some features are not available to some browers, (or other web accessing tools such as wget and the like), and are disabled to them. Others require different coding to produce the same type result in different browsers.

Looking at the list of UAs it alternates through from the other thread, I think it's a terrible idea. It's one thing to say your Firefox is Opera or Internet Explorer, but, it's quite another thing to say Firefox is lynx or wget, which do not support a great many of the features used in the presentation of pages here. Those will always generate errors or unexpected results.