hi
with your triggers running perfect for that length of time, then it is something to do with your new settings or you have not given the new installation full access through something that is causing the crashes, you will have to go through all your software to see which one is causing the crash.
just use mfp and do not surf the internet, then turn your antivirus off for half an hour or so, to see if the problem stops.
then turn off one at a time any other malware/virus etc checking software.
mcbee
P.S
i used to use a router and had all sorts of problems with it not working properly, i would have intermitent internet, but not enough to cause problems with v6 as v6 waits for a re-connection.
i traced the problem to my voltage regulator/adaptor, it would give the correct volts, then at a certain time after, it would give low volts thus a poor connection to the internet, i found it happened more in the hot weather,the adaptor overheated, when i renewed my adaptor all was ok.