coolant leaking very very slowly...
is this a normal common problem?
how can i fix this?

 

I have the same issue with my 2009 and my mechanic, Toyota/Lexus master mechanic, did a pressure test and found no leaks. He noted that my coolant was low and I noticed that at an idle the heat would blow cold, at higher rpm it blew hot which led me to believe it was low on circulating coolant.

He told me to just watch it and let him know if it continues to eat the coolant.

 

water pump gone?
did you check where its leaking from?

 

Leaking in that area is not common; I'd look to have it fixed ASAP.