I've found the problem. Thanks for the replies.
It appears to be a freak problem with our automated imapsync backup script. The script had been running fine for over a year, but I believe a user created an extra folder that matched the script's regex, and for the last couple of months it's been recursively backing up into more and more folders. They're all empty, but as we all know that the number of folders will affect the loading time of the browser.
If anyone is really interested it was backing up in this manner:
week 1
week 2 > week 1
week 3 > week 1
> week 2 > week 1
week 4 > week 1
> week 2 > week 1
> week 3 > week 1
> week 3 > week 2 > week 1
As you can imagine, it's been running long enough to have created a fair number of folders to get this out of hand. |