Didn't you say it's always been kindof slow?
Well...actually it didn't really go slow...it drained ok until it would stop. But the whole time it would be draining, it would go glub glub glub at every drain in the house.
Every time we did laundry the toilet would gurgle.. Every time I'd take a hot soak, when I'd let out the water, the whole house drains would gurgle. Then, sometimes (not always) it would just stop.
Just stop draining, I mean.
It did the gurgling only at first and not very often. Then it got more often, which made us think the septic might be getting full. But before we could do that it started this stop draining start draining business. So we got it pumped out. But that didn't help, so we ran the snake. That seemed to help, but then yesterday we started having the trouble again.