Browser hangs on Profile and Resume blocks

[Kristina Hoeppner]

reported by two users on Twitter, e.g. http://twitter.com/#!/samwisemoss/statuses/190011080829972480

The page editor hangs when profile or resume blocks are dragged into a page. Here's a video from Firefox 11:

http://mahara.solent.ac.uk/view/view.php?t=Yari5QxJNIoRPbvu2SLg

The same thing happens for another user in Chrome.

Sam says this has been happening for years. She is currently on Mahara 1.4.

I could not replicate it on demo.mahara.org and the user with the Chrome issue could neither. But it's clearly happening on their installations.

[Daniel Clark (d-r-clark)]

Same issue experienced at University of Kent.

Adding profile and resume blocks to a page takes around 1 - 2 minutes for the options box to load, worst case was over 3 minutes. Seems to affect administrators more so than standard users, however the waiting time for standard users is not insignificant.

Occurs in all browsers - IE, FF, Chrome, Safari. Currently running version 1.4.

[Samantha Moss (samantha-moss)]

You can see what happens in my screen cast here: http://mahara.solent.ac.uk/view/view.php?t=TkZILUtncz3VjQoPG6mK

[Richard Mansfield (richard-mansfield)]

It's probably the slow query described at https://mahara.org/interaction/forum/topic.php?id=4102

This should be quite a bit faster in 1.5, so the best thing to do is upgrade when the release comes out. Gary Beldon's comment on the thread indicates that the same changes also help for 1.4, so backporting them is another option.