New information is inserted at the end. Beta V0.25 ---------- Corrected problem introduced in 0.25 where many OS2 programs could not drop DTR. Beta V0.26 ---------- If a set DCB IOCTL is issued, and if pending reads/writes exist, the suspended threads are restarted. Previous versions always placed port addresses in BIOS memory at 40:0 (DOS sessions) for both COM1 and COM2. The port addresses starting at 40:0 are no longer filled in for COM1 and COM2 if SIO did not detect a port there or if the mouse is using the port. I believe the problem of DOS sessions being put to sleep has been solved. V0.30 works well on my system with default DOS settings and default CONFIG.SYS entries as follows: In the DOS settings IDLE_SECONDS = 0 IDLE_SENSITIVITY = 75 In CONFIG.SYS MAXWAIT=3 PRIORITY_DISK_IO=YES Note that I said these default settings work well with V0.30 ON MY SYSTEM. The above settings may have to be changed on your system. Beta V0.30 ----------