Spells: Disappearing bonechips

[fischsemmel]

I've been leveling my necro on spectres in oasis on and off from 40-44, and for a few days when my bonechips seemed to be disappearing I wrote it off as "oh, I must have miscounted them earlier" or something.

But this morning I came out here with 40 bonechips. I summoned 2 pets, was at 36 bonechips, and since then leveled for about 90 minutes. Since I summoned my two pets, I have only cast drain spirit, vampiric curse, dooming darkness, invoke fear, augment death, feign death (maybe didn't cast this, can't remember), call of bones, and used my jboots... but I am down to 33 bone chips.

What gives? I am absolutely positive that I did not somehow summon more pets than I remember, or sell/drop a partial stack of bonechips, or start off with fewer than 40.