This may be a silly question, but if I install Lime Wire PRO, will I lose all the searches currently in progress? Also, I am wondering why most of the movies I am trying to download all tell me they have detected a corruption?

Pro will start up and continue where you left off.

As for the corruption, looks like the spammers are sending you bad search results--be cautious about downloading the first few results that show up.

Search the forums for "corrupt" to find more info