ReadyNAS 104 Crashing Constantly

While I do not have a 104 I see you are running a ton of apps.

I believe the 104 only has 512MB of RAM so you could be running out of RAM. You may want to look at the thread that increases swappiness to 60 to prevent having apps killed and use less apps. Increasing swappiness has really helped out on my system since I also run tons of apps, but I also have 4GB RAM.

For instance, this is what some apps normally use up in RAM (these are my top RAM using apps):

 3243 admin     20   0  926m 282m 6144 S  13.8  7.1 108:10.90 Bitcasa                                                            
28672 admin     20   0  473m 129m 3688 S   0.0  3.3  15:03.76 python  <--- Sickbeard                                                           
25942 admin     20   0  724m 127m 4256 S   3.6  3.2  38:29.19 sabnzbd                                                            
12955 root      20   0  551m  90m 5196 S   0.0  2.3   3:56.13 Plex Media Serv                                                    
16279 admin     20   0  242m  58m 4224 S   0.0  1.5   0:29.76 python   <--- CouchPotato                                                          
12963 root      35  15  373m  53m 2828 S   0.0  1.4   2:22.53 python  <--- Plex Media Server  

EDIT: On a side note, I have found using rsync (without ssh) has always been the best way for me to transfer data to/from the NAS for backup/restore especially since you can resume nicely. I also use rsync (via NAS web interface) to sync my files to the Bitcasa clould.