In 3.2.5, This seems to be a problem with newly edited records and records already in the system. If there is a series statement in subfield a, and a volume number in subfield v the correct punctuation for subfield a is to end with a space semicolon space http://openlib.org/home/krichel/courses/lis512/aacr2/6.html However, if subfield a is punctuated as above, it causes a fault in the search, in both the OPAC and the staff interface. The search times out. To test it out on our catalogue (in the URL field above) search for 'school songs' You'll get a slew of items that are in the Novello's school songs series. Clicking on the series in the list on the left side of the page works fine. But if you go to an item that has both the series and the number (Folksongs from Somerset, Set II for example) and click on the series link there (in the normal view), it doesn't work. Chrome eventually returns a message that the page is unresponsive. I have deleted the spaces around the semicolon in a few records (the series County folklore) and the series link in the normal view works fine.
This has been fixed in Master.