This is in planning for upgrade to J!3. I have found no workable solutions here or elsewhere on the web.
Debian Squeeze 6
On all virtual hosts before I updated CiviCRM (4.4.x and 3.5.x) the Dashboard shows up but the Ajax "Loading..." widget just keeps spinning and freezes the whole GUI. If I click on another CiviCRM link and restart Apache, it will go to that page and I can navigate around but going back to the Dashboard locks it up again. I then updated both instances to 4.6.4 to the same result. I've disabled all other third party extensions to no avail.
Turning on Debugging with backtrace produces no output. Clean page.
Any help would be greatly appreciated. Thanks in advance.