I've noticed that if I use a persistent image file and for some reason it gets corrupted (powering off abnormally) that I'll get a bunch of filesystem errors in dmesg. I can fix it by booting with the "noimage" cheat code, like "knoppix64 2 noimage" and then run "fsck.ext2 /mnt-system/KNOPPIX/knoppix-data.img" and then "sudo reboot".
It'd be really nice if there were an automatic check of the ext2 image when knoppix boots. It would also let you know if errors have crept into your filesystem since knoppix still works but you see weird messages like "unable to write /etc/fstab".
Cisco Nexus 48-Port 10G SFP+ Switch N9K-9396PX w/ 9K-M12PQ 12-Port 40G QSFP
$249.99
Zyxel ES2024 Managed Networking Gigabit Switch
$43.12
Cisco (SG100D-05-UK) 5-Ports External Ethernet Switch
$40.00
Juniper Networks EX3300-48P 48-Port PoE+ 4x SFP+ Network Switch w/ Power Cord
$43.95
New Linksys SE3005 5-port Gigabit Ethernet Switch
$18.99
New 10/100 Mbps 8 Ports Fast Ethernet LAN Desktop RJ45 Network Switch Hub
$11.49
Linksys SE3008 8 Ports Rack Mountable Gigabit Ethernet Switch
$21.99
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97
Netgear ProSafe S3300-52X-POE+ 48-Port Gigabit PoE+ Stackable Network Switch
$100.95