X0101 EFFECT 33 LIVE 2009-07-15 0001193125-09-147646 485APOS 0000773757 COLUMBIA FUNDS SERIES TRUST I 002-99356 S000010622 Columbia International Stock Fund C000078985 Class Y S000012070 Columbia Mid Cap Growth Fund C000078986 Class Y S000012073 Columbia Small Cap Growth Fund I C000078987 Class Y S000012074 Columbia Strategic Investor Fund C000078988 Class Y S000012081 Columbia Large Cap Growth Fund C000078989 Class Y S000012102 Columbia Small Cap Value Fund I C000078991 Class Y S000012126 Columbia Conservative High Yield Fund C000078992 Class Y S000021579 Columbia Bond Fund C000078993 Class Y