hello everyone, I have been trying to solve this problem for over 3 days already. At first I was noticing sluggish performance through my webapp after several rounds of sortable.create. I start to suspect that sortable.destroy does not release and unregister all event observers. Therefore I used a test case of iterating through a series of sortable.create and sortable.destroy. I noticed a slight increase of memory usage, but the memory is released as soon as I refresh the page. As for my webapp, at any given time when a sortable is modified, an ajax request is sent to replace the innerhtml of that sortable. Before refreshing the old content of sortable div, I call sortable.destroy() to make sure everything gets unregistered. After ajaxing the content of the sortable, I then call Sortable.create() to re-register all the child elements. This all works, but the memory usage increases dramatically(.5 -1 meg) as I recreate the sortable each time. I can easily go over 150 meg of memory usage just by dragging around items. The memory never gets released (even if I refresh the page). To my surprise this dramatic increase of memory usage only happens in IE. My sortable list is not big at all(~around 10 items). I''m not using any tree options. I suspect circular reference or closures might exist inside the dragdrop.jsthat''s causing this memory leak. I provided some simple sample test case code below to show you guys what I''m talking about. //first call to create sortable function createSortable(){ Sortable.create (''sortableDiv'',{tag:''div'',dropOnEmpty:true,containment:[''sortableDiv''],only:''lineItem'',onUpdate:sendAjaxRequest}); } //called by onupdate function sendAjaxRequest(element){ var sequence =Sortable.sequence(element); ajaxEngine.sendRequest (''server'',''action=updateSortableDiv'',''sequence=''+sequence); } //when response is received function processResponse(){ Sortable.destroy(''sortableDiv''); //some code here to refresh sortableDiv element update by replacing innerhtml //recreate sortable for ''sortableDiv'' createSortable(); } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Spinoffs" group. To post to this group, send email to rubyonrails-spinoffs-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-spinoffs-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-spinoffs?hl=en -~----------~----~----~----~------~----~------~--~---