Ghasts on the 1st level of UM: One shot paralysis at any lev

[Gwain]

This may not be a bug, but it seems overpowered, ran into ghast, ghast successfully bites me at lv 50, completely paralysed cannot heal, cannot turn, cannot fight or flee, eventually killed. The last few raises I've done have been for chars that have been killed similarly by the ghasts at the entry to UM, though on my part it seems a lack of preparation may have gone into it, but for the first level of undermountain it seems a bit excessive, maybe something is letting them get a bit too much leeway. Me I felt silly for dying, but a lv 20-35 pc may be a bit more deterred by inescapable death so close to the exit or entrance.

[Selveem]

Same issue as reported here?

viewtopic.php?f=148&t=15882&p=85402&hilit=ghast#p85402