Crystal Reports文本切断了“详细信息”部分中的最后一行

I have a Crystal Report 11 file that is a letter. The first Details section contains a large text box that has print date, address block, and the salutation line. Every once in a while, the last line of the text box gets cut off so that the salutation isn't seen. It's very inconsistent in that sometimes, I run the report for one person in my system and the text is cut off, but if I run the report a few hours later for the same person, without having changed the values of the address or name in my database, then the letter looks fine. I have a Crystal Report 11 file that is a lette