Logical log could not be freed !

Hello ... Does anyone know how to fix the following problem ? We have installed Informix Online Workgroup Server 7.2 on Sun Solaris 2.5. We are building database application that can be accessed via Web using Netscape Live Wire Pro 1.0. At one time while developing application, we received database error stating that the logical log was full and needed back up. The problem happened after we had backed up all logical log using ontape utility. The status of logical log remained UB (Used and Backed up). It couldn't be changed to F (Free). After consulting the reference books, we knew that the only possible reason was long transaction (there was still bug in our program or some operations that needed more log than space left in logical space). So, we restored the database using our level 0 archive ( we took our archive after we created the database structure; the archive contained the last logical log file). We did not roll forward our logical log. Later, the problem happened again. This time, we try to take the server to quiscent mode first with the hope that all transactions would be rolled back thus closing the transaction. The log remained UB after we took Informix online again. We then decided to start all over again. We installed the server using setup utility provided on CD-ROM distribution. After installation, we tried to make a level 0 archive and then backed up all logical log. Even when there were no databases created, the logical log still could not be freed. Could someone explain why this happened ? Thank you for your help ! Pranadjaja Radnet Staff prana@rad.net.id