Good morning all, Just hoping for a sanity check... we have a fleet of RBSXTLTE3-7 units out in the field which have proven to be quite reliable. Since upgrading one of the units which was previously working fine from 6.39.2 to 6.45.2 for the security fixes (and doing associated firmware upgrade) - the unit is locking up even with no traffic after about 4 hours of uptime. I'm still able to SSH into it and do some tasks (eg issuing "/system reboot" works, albeit takes quite a while to actually do the reboot), but other tasks don't work (eg if I type in "/ping 1" it will reliably and totally lock the SSH session before I can even enter the full IP address). I've tried a full factory reset of configuration and rebuilding from scratch, as well as going back to 6.44.5 and up to 6.46beta16, the only idea I haven't tried yet is to netinstall it (which is a bit of a challenge as it isn't something I can easily access physically so I'm hoping to avoid that!). I'm not game to upgrade another one of our units to see if it is the unit or the upgrade that is the problem quite yet. Is there anything obvious with the upgrade path that I've missed perhaps? Kind regards, Thomas