I have a problem with the admin panel being very slow when saving an entry. It takes about 30 seconds to save an entry. I use a matrix for the different part of the entry (imgs, textfields, titles and so on). Does anyone else have this problem, and have someone found a solution for this? :)
To debug where the delay is, you can enable devMode, which will write out a bunch of code and database profiling information to your log files in
After you do that, save an entry then find that request in the log files. You can look at the timestamps on that request to see what part of the code the 30 second delay is occurring on, which will point you in the direction of the underlying problem.