A day before iOS 4.3.2 was released and today we came to know that Apple has blocked the Cydia SHSH’s Server which was used to save your SHSH Blobs.
According to CHPWN Tweet:
Till now no words are said whether really Apple has blocked or it is some problem by @Saurik. If you want to save your SHSH Manually, so you can follow the complete guide here. Lets wai for Saurik and see what he comes up with.