centos 4.4 lvm snapshots crash system when they become full (run out of space)

Just a note:

On a CentOS 4.4 server, lvm snapshots that eventually became full (and hence invalid), would crash a system. This problem seems to be fixed in Centos 4.6 (I didn't try 4.5). I can now run snapshots that eventually run out of space, and successfully lvremove them without crashing the system.