I myself had 2 accounts locked this morning (72 hour) and a friend of mine had 4 locked (72 hour). One of the accounts of mine had only ever used PQR the other had LazyBot and PQR run on it. One of his accounts had only had PQR run and the other 3 had PQR and a different bot (not sure of the name). Not sure if a lot of others on US servers have been locked today but it looks like the only matching factor between all 6 accounts was PQR.