Server up but Virtualmin won't stay up

Here is the contents of the /proc/user_beancounters file:

Version: 2.5
       uid  resource                     held              maxheld              barrier                limit              failcnt
    90999:  kmemsize                 76751205             78077952            228000000            240000000                    0
            lockedpages                     0                    0                 1200                 1200                    0
            privvmpages                924582               926555               896536               943718               892528
            shmpages                     1206                 1206                90000                90000                    4
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            numproc                        92                  120                  600                  600                    0
            physpages                  214748               218221               896536               943718                    0
            vmguarpages                     0                    0               524288           2147483647                    0
            oomguarpages               192788               192788               524288           2147483647                    0
            numtcpsock                     36                   36                 2000                 2000                    0
            numflock                       14                   14                 1000                 1100                    0
            numpty                          1                    1                  100                  100                    0
            numsiginfo                      0                   30                 1024                 1024                    0
            tcpsndbuf                  676192               676192             10000000             20000000                    0
            tcprcvbuf                  589824               589824             10000000             20000000                    0
            othersockbuf               339864               341152              5000000             10000000                    0
            dgramrcvbuf                     0                    0             10000000             10000000                    0
            numothersock                  279                  281                 2000                 2000                    0
            dcachesize               42796557             42918127             57000000             60000000                    0
            numfile                      3948                 4015                40000                40000                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            numiptent                      34                   34                  500                  500                    0