PQ74852 is a cumulative APAR fix and includes the following fixes:
PNU0008 - Disk Queued Messages Not Freed From Memory
PNU0009 - Disk Queue REM Traps When Message Pool Is Full
PQ12298 - TQ Open/Close Performance Option Needed
PQ13693 - CS2_TRANSACT core dump after install PTF 3
PQ14780 - Incorrect Signal Handler Restored After Calling CS2_INIT
PQ18134 - Cancelled App Hangs Intermittently in TQ API, Hanging DAE
PQ29952 - TQ REM Does Not Close Table/Queue Properly When Exception
PQ30537 - Baselogger REM Truncates a DBCS Message
PQ31759 - TQRMU Verify Returns "Sec. Index Corrupt"
PQ32632 - Verify Function Needed For DAE Queue
PQ33765 - Timing-related TQ REM Trap While Stopping
PQ35212 - CS2_TRANSACT Timeout With Fox
PQ50888 - Semaphore Number Created By DAE Increase on CS/6000.
PQ55356 - New KEYID Env Var To Create Unique ftok Key For Shared Mem
PQ60773 - Improve Temp Res, Exception, Sema4 Handling in cs2calls.dll
PQ62600 - Semaphore Leak in CS2_PURGE_RES and CS2_COND_PURGE
PQ62707 - D_SIZEOF Gets CSR2093 Error.
PQ63115 - READRVAR Returns No Data When Data Begins With Null Char
PQ64249 - DDMS >32K Unsolicited Msg's Data Isn't Saved in Variable
PQ66040 - Autoload of a Program Can Result in CS2START_CB Trap in memset
PQ66403 - CS2_HALT_RES Traps cs2icr00
PQ74852 - Poolfree/Pooldump Traps From TELNET Session And Hangs DAE