Could not allocate the quota must be some mistake.

[ThreeDHead]

I already answered before - this happens in any browser. Even after a system reboot.
Where are these settings?

[To-M]

As I stated before "could be a bad boot media and you can try to re-install, make sure to save the settings and config at Maint. > Misc." or you can test with the DSS on a USB Flash Stick and boot with this and see if it is viewable.

[ThreeDHead]

Sadly, the system in production, and I can not put the experimentation with it. Especially reinstall the system.

In what files are stored setting quotas? These quotas should be removed altogether!

[To-M]

The Quota.log file can be downloaded from the GUI in STATUS -> Hardware -> Function: Logs.

Did you try to stop and restrat the Apache from the Console screen by entering CTRL ALT T then select "addons" then select Apache then stop and restart?

You can also submit a support ticket from your User Portal and send in the log file to our support team for us to review them as well.

[Al-S]

Such system behavior could be related to an issue with the storage disk(s) or the RAID controller itself. Try to check the controller health and storage disks health too.