Issue is as described before. Here is a log when the sever stops responding: !. Server log ### Server v. Pskmail_server 1.5.1. (C) 2011 PA0R 05:01 UTC Apr-12-2012: Program start 05:01 UTC Apr-12-2012: Connected to netherlands.aprs2.net port 1314 POS=33S:150E Outside BigEar geo area... BigEar serverport:10148 BigEar not available Scanning: 3534500,3540000,7192000,7195500,14111000, Offset = 0 minute(s) Pskmodes:MFSK32,XXXX,XXXX,XXXX,XXXX, . 05:01 UTC Apr-12-2012: Listening to the radio initialized 05:01 UTC Apr-12-2012: Send>APRS-IS:VK2ETA-1>PSKAPR:@120501z3350.15SP15057.44E&PSKmail 1.5.1 server DL8AH->SM0RWO DL8AH->SM0RWO 9A3ATZ->SM0RWO 9A3ATZ->SM0RWO DL9YCS-5->9A1CRA DL9YCS-5->9A1CRA DL9YCS-5->SM0RWO DL9YCS-5->SM0RWO DL9YCS-5->SM0RWO DL9YCS-5->OE5RTL DH5JF-8->9A1CRA DL9YCS-5->OE5RTL DL9YCS-5->OE5RTL OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-10->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW F1GHX->9A1CRA F1GHX->DK4XI-3 OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW PA0R->PA0R-1 PA0R->PA0R-1 SP8DXZ->SM0RWO SP8DXZ->SM0RWO PA0R->PA0R-1 SP8DXZ->SA6BQZ-1 PA0R->PA0R-1 DL9YCS-5->OE5RTL DH5JF-8->SA6BQZ-1 DH5JF-8->OE5RTL DH5JF-8->SA6BQZ-1 DH5JF-8->9A1CRA DF7AET->SM0RWO SP8DXZ->SA6BQZ-1 OE3GRC->DK4XI-3 OE3GRC->DK4XI-3 OE3GRC->DK4XI-3 SP8DXZ->SM0RWO OE3GRC->DK4XI-3 OE3GRC->DK4XI-3 SP8DXZ->SM0RWO OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW SP8DXZ->SM0RWO SP8DXZ->SM0RWO OE3WGW-8->OE3WGW OE3WGW-8->OE3WGW OE5RPP->SA6BQZ-1 <End of Log> 2. Here is a copy of the TOP output: 4033 pts/1 S+ 0:01 /bin/bash ./web2email 120 4038 pts/2 Ss 0:00 bash 4133 ? S 0:00 [usbhid_resumer] 4140 ? S< 0:00 udevd --daemon 4141 ? S< 0:00 udevd --daemon 4174 pts/2 Sl+ 650:15 src/fldigi 4190 pts/3 Ss 0:00 bash 13204 tty1 Sl 0:12 /usr/lib/firefox-3.6.24/firefox-bin 13274 tty1 Sl 0:01 /usr/lib/firefox-3.6.24/plugin-container /usr/lib/fla 13281 pts/1 S+ 0:00 sleep 120 13292 pts/4 Ss 0:00 bash 13310 pts/4 R+ 0:00 ps ax 28329 pts/3 S+ 0:00 /bin/sh /usr/local/bin/pskmail_server 28330 pts/3 S+ 0:23 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl 28344 pts/3 S+ 0:10 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl 28345 pts/3 S+ 0:20 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl 28354 pts/3 S+ 0:32 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl 28355 pts/3 S+ 0:19 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl 28365 pts/3 S+ 4:51 /usr/bin/perl -w? /usr/local/share/pskmail_server/rfl jdouyere@Pskmail:~$ 3. I noticed that I can use CTRL-C to stop the server. I have to do a killall rflinkserver.pl from another terminal to stop the server 4. The server.log file contains the following (consistent with the terminal display of the server): 05:01 UTC Apr-12-2012: Program start Program start: 05:01 UTC Apr-12-2012 05:01 UTC Apr-12-2012: Connected to netherlands.aprs2.net port 1314 05:01 UTC Apr-12-2012: Listening to the radio 05:01 UTC Apr-12-2012: Send>APRS-IS:VK2ETA-1>PSKAPR:@120501z3350.15SP15057.44E&PSKmail 1.5.1 server 5. I checked the Fldigi log and there was no activity at all (not even unproto) on the server before it stopped responding. 6. Running 1.5.1 under Ubuntu 10.04 LTS A real mystery and a shame now that my Fldigi does not lock-up anymore. It happens randomly, sometimes after a week or very shortly like in this case. Next week I will try to run the server under Puppy Linux to see if it makes any difference. Regards, John