After running across today on the EQlive boards it became pretty obvious that while they know about the shrink bug they don't really care to fix it. So I had the idea that since you can block Mod Rods manually that maybe you could do the same to shrink and your pet. Note that this bug mostly applies to people with the Pet Affinity AA who are ever grouped with a Shaman that likes his/her group shrink spell a whole lot.
Go into your EQ directory and find a file called "<CharName>_Saryrn.ini" and open it with notepad.
Scroll all the way down to the bottom where you'll find a section called "[BlockedPetSpells]"
Add the following numbers to that list:
345
3393
2203
1831
1355
1874
That will block nearly every shrink spell that anyone else can cast on your pet. I've tested this with normal shrink so far and my pet is no longer hit with that spell now. The only thing that should shrink your pet now will be your self cast Tiny Companion spell.
It should look similar to this when you're finished:
I tested it myself with my Umbracite Swarm Orb, and it does indeed work. Taken from sotguild.com, source is Skanda.
