data flow with fuzzy lookup freezes on pre-execute phase

I have a fuzzy lookup in a data flow but this data flow never gets pass pre-execute phase. What is the problem?

Thanks

does the package execute up to that point just fine? how is the fuzzy lookup configured, what is the size of the dataset you're trying to load up?

|||when i excute the whole the whole package , it works fine, not much delay, however, running the data flow task by itselfs hung