Since the installation of ArcaOS 5, has this always been the case or is this a recent development?
If this is a recent development, have you tried to install an earlier backup? I always create a backup after I have made major changes to my system.
Are you using a feature enhancement program like XIT? I have found that this program causes system hangs from time to time. Some of its features must conflict with XWP.
Are you using the latest Firefox or Seamonkey? Earlier versions could hang the system.
When the system hangs, does the cntrl, alt, del take you to the TOP screen or does this key sequence do nothing?
Are you using the OS4 kernel or the OS/2 kernel?
Since the kernel still uses single input que, there can be system hangs.
One of the things I have found is that when my system hangs, if I hit cntrl, alt, delete and nothing happens, I keep repeating the sequence and eventually the system will reboot with no loss of data. However, if I had made graphic changes I would lose them. Very seldom do I have to turn the computer off and back on.
I run ArcaOS on 2 partitions. If I have problems on one, I can continue to operate until I can solve whatever problem I have created for myself on the other partition. Yes, I am always trying various things.
I have seen some of your problem on one of my ArcaOS partitions when I rebooted. None of my graphic changes were saved when the computer was rebooted or the system is started back up. I found that if I restarted the WPS, my graphic changes were saved, even after I restarted the computer.
With the JFS, I have seen very little date corruption with system hangs.
The X220 I believe is an old notebook. I wonder is the hard drive is weak and could be going out. Do you operate Windows on the same notebook and if so, are you seeing problems with Windows?