Why don't my plasmid freeze in freezer?

[Takbum Ohn]

Hi. 

I prepared my plasmid sample for sequencing with Wizard DNA purification
system(Promega). 
After washing the column with alcohol(maybe 70% et-OH), I drained plasmid
attached on resin with hot 300 lambda water and stored in freezer.
about 24 hours later, i knew that my plasmid sample did't freezed.

Why?

Are there anyone know the cause?

thanks...

Tak-bum Ohn.

ahnss at hitel.kol.co.kr