cannot login if registered with CAPITAL letters

[OhadR]

A@A /a
pass-encryption:
abf45568118293b980141d4646a60f386e98d7d34f97d586f609e3fecfbd9507
A@a /a
pass-encryption:
30887902e65f39ac66a1ab75a0ad62d45fb92684e4d6c0205268d86413b944f5

hence, if user registered with A@A, then tries to login with a@a, it will fail.