This morning Xscreensaver refused to unlock. I had to login on a virtual terminal and kill the daemon. Additionall, the settings panel now has the “lock” checkbox checked, and I can’t uncheck it. The lock time (4 mins) also cannot be changed. Re-installing didn’t help.
I’d replace it with xfce4-screensaver, but then I’d lose the many entertaining screensavers that Xscreensaver features.
I recently had the same dilemma…and decided to stay with the blank or the flying mice. This isn’t actually anything i am looking at…since i am away.
A small note though: when changing screensavers/lockers, be sure to open the xfce settings editor and in the group xfce4-session change the LockCommand accordingly (for example from lightlocker-command --lock to xfce4-screensaver-command --lock)