This post originally appeared on the Mozilla Hacks blog.

Firebug 1.5 was released yesterday on addons.mozilla.org, where you can now download it. It’s compatible with the upcoming Firefox 3.6.

If you’d like to take a more in-depth look at what’s new in Firebug 1.5, here’s a series of articles written by Firebug contributor Jan Odvarko (aka Honza):

• Break On Next: breaking on the next executed script, HTML mutation, XHR execution, or JavaScript error.
• XHR breakpoints: creating conditional breakpoints in XMLHttpRequest execution.
• Debugging cookies: using the Firecookie extension to break JS execution on cookie changes.
• Page load analysis: 6 examples analyzing data provided by the Net panel.
• HTTP Time Monitor: using Network Activity Observer for more accurate timing.
• XML Response Explorer: inspecting XML based responses received from the server.
• Network info header and column customization: specifying what information to display within the Net panel.

If you’ve had a chance to try the new Firebug, comment here or in the Firebug newsgroup and tell the team what you think!