Please try to vacuum/analyze and reindex your database -
http://hm2faq.holdemmanager.com/ques...29#maintenance
If you continue to have problems, try the following:
Try creating a new DataBase and import a small portion of your \HM2Archive so you can see if the problem exists in the new DB -
http://hm2faq.holdemmanager.com/ques...y+played+hands
If the new database seems to work properly, it sounds like your database might be corrupt. Please continue to use the new database and import the rest of your hands using the steps above.