The amule is normaly saying that:
2012-03-09 17:54:27: BaseClient.cpp(457): Client 10497 still linked in 1 places: CUpDownClient::Safe_Delete reflocker, copy ctor of copy ctor of copy ctor of copy ctor of CClientList::AddClient m_hashList.insert,
2012-03-09 17:54:27: BaseClient.cpp(3004): Last reference to client 10497 0x00007fffdc3e8d60 unlinked, delete it.
2012-03-09 18:46:47: BaseClient.cpp(1834): Compatible client found with ET_COMPATIBLECLIENT of 15
2012-03-09 18:49:40: BaseClient.cpp(1834): Compatible client found with ET_COMPATIBLECLIENT of 15
2012-03-09 18:51:09: BaseClient.cpp(457): Client 10729 still linked in 1 places: CUpDownClient::Safe_Delete reflocker, copy ctor of copy ctor of copy ctor of copy ctor of CClientList::AddClient m_hashList.insert,
2012-03-09 18:51:09: BaseClient.cpp(3004): Last reference to client 10729 0x00007fffe427d870 unlinked, delete it.
It's a problem?