This issue started only a couple of weeks ago.
Every time I try to install or update a plugin, I get the message: "Downloading install package from..." and then the page stops here. It doesn't show me the "unpacking", "activating" etc.
Then, if I go back to "Installed Plugins" I see the plugin there disabled. I just need to click on "Activate" and voilà... it is working!
Folder permissions are set to 755 and I have no idea why this happened.
Is there any idea?