Getting dispelled randomly

[Teron]

I was making a small undead army, when I got dispelled incompletely.

I've lost the spells I've just casted (petrified armor) and I didn't see any "you got dispelled" messages, nor anyone casting it.
I didn't use any objects or wear obscure items, I was just regenning.
After I rebuffed myself, I moved to BH and lost all my spells, again.

I don't have a log.
This happened around 25/04/16 10:35am GMT.

Thanks.

[Ker]

Similar experience points at coliseum - were you following mighty druid?

R,
Dr

[Teron]

Yeah, as it turned out, I was following a mighty druid, who was in the coliseum at the time.