Full_Name: Ilya Lukyanov Version: 2.4.35 OS: Windows 7 x64 URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (95.25.254.250) I've built lmdb from source distribution of OpenLDAP 2.4.35 under Windows 7 x64 under Visual Studio 2012. All tests included into source distribution pass successfully. Then i'm executing my own test with code as follows: https://gist.github.com/ilyalukyanov/5644971 And i'm allways get an asserion when executing near 32500-th mdb_txn_commit (line 2231 - assert(oldpg_txnid <= env->me_pglast);) I think this is a bug because if consider the scenario with separate usage of LightningDB under high write-load scenario, 32k commits is not enough.