Network Change Detected

At a seemingly-random point either a web page won't load (Safari tells me I am not connected to the Internet), or my email tells me it is having problems getting to the server. However, the 'bars' in my menubar show that I am still logged onto my home network and I still have a connection and a strong-enough signal. The rest of my family is still online and my iPhone is showing that it's online on the wireless connection.
Safari offers to run Network Diagnostics: I do that, and it comes to a point where it says: "Network Change Detected: Your network configuration has changed. Click OK to proceed to the next step."
When I do that, and Continue (without changing the options that the dialog is showing me); it completes and tells me my connection is fine, which it then is. After that I can go online, retrieve/send email, etc. ... until the next time (usually a few minutes later)
My OS is OSX 10.6.4 and my version of safari is 5.0 (6533.16). I've got a linksys router with a password. Is there anything that I can do to my computer or my router to fix this?

I'm sorry to bump this, but I really wish someone could shed some light on the situation. I realize now that it's probably not a problem with my MacBook and instead with my router, but if anyone has any idea why a router would all of a sudden stop letting wireless computers connect to the internet I would love your input. Thank you.

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    DpSysAdmExtInit: VMC (JAVA VM in WP) is not active
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    DpShMCreate: sizeof(tm_adm)          3605136     (17936)
    DpShMCreate: sizeof(wp_ca_adm)          1200     (60)
    DpShMCreate: sizeof(appc_ca_adm)     1200     (60)
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    DpShMCreate: sizeof(comm_adm)          528048     (1048)
    DpSlockTableSize: max/headSize/ftSize/fiSize/tableSize=0/0/0/0/0
    DpShMCreate: sizeof(slock_adm)          0     (96)
    DpFileTableSize: max/headSize/ftSize/tableSize=0/0/0/0
    DpShMCreate: sizeof(file_adm)          0     (72)
    DpShMCreate: sizeof(vmc_adm)          0     (1280)
    DpShMCreate: sizeof(wall_adm)          (22440/34344/56/100)
    DpShMCreate: sizeof(gw_adm)     48
    DpShMCreate: SHM_DP_ADM_KEY          (addr: 04ED0040, size: 4205552)
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    DpShMCreate: allocated tm_adm at 04ED3310
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    DpShMCreate: allocated comm_adm at 05243F00
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    NiWait: sleep (10000ms) ...
    NiISelect: timeout 10000ms
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    NiISelect: write-mask is NULL
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    Workprocess Table (long)               Tue Jan 13 21:47:00 2009
    ========================
    No Ty. Pid      Status  Cause Start Err Sem CPU    Time  Program  Cl  User         Action                    Table
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    0 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    1 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    2 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    3 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    4 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    5 ?         -1 Free          no      0   0             0                                                             
    ERROR => DpRqTxt: bad rqtype -1 [dpxxrq.c     785]
    6 ?         -1 Free          no      0   0             0                                                             
    Dispatcher Queue Statistics               Tue Jan 13 21:47:00 2009
    ===========================
    --------++++--
    +
    Typ
    now
    high
    max
    writes
    reads
    --------++++--
    +
    NOWP
    0
    0
    2000
    0
    0
    --------++++--
    +
    DIA
    0
    0
    2000
    0
    0
    --------++++--
    +
    UPD
    0
    0
    2000
    0
    0
    --------++++--
    +
    ENQ
    0
    0
    2000
    0
    0
    --------++++--
    +
    BTC
    0
    0
    2000
    0
    0
    --------++++--
    +
    SPO
    0
    0
    2000
    0
    0
    --------++++--
    +
    UP2
    0
    0
    2000
    0
    0
    --------++++--
    +
    max_rq_id          0
    wake_evt_udp_now     0
    wake events           total     0,  udp     0 (  0%),  shm     0 (  0%)
    since last update     total     0,  udp     0 (  0%),  shm     0 (  0%)
    Dump of tm_adm structure:               Tue Jan 13 21:47:00 2009
    =========================
    Term    uid  man user    term   lastop  mod wp  ta   a/i (modes)
    Workprocess Comm. Area Blocks               Tue Jan 13 21:47:00 2009
    =============================
    Slots: 20, Used: 0, Max: 0
    --------++--
    +
    id
    owner
    pid
    eyecatcher
    --------++--
    +
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    NiISelect: timeout 5000ms
    NiISelect: maximum fd=1
    NiISelect: read-mask is NULL
    NiISelect: write-mask is NULL
    Wed Jan 14 05:47:05 2009
    NiISelect: TIMEOUT occured (5000ms)
    DpHalt: shutdown server >Veeru_NSP_00                            < (normal)
    DpJ2eeDisableRestart
    Switch off Shared memory profiling
    ShmProtect( 57, 3 )
    ShmProtect(SHM_PROFILE, SHM_PROT_RW
    ShmProtect( 57, 1 )
    ShmProtect(SHM_PROFILE, SHM_PROT_RD
    DpWakeUpWps: wake up all wp's
    Stop work processes
    Terminate gui connections
    wait for end of work processes
    not attached to the message server
    cleanup EM
    EsCleanup ....
    EmCleanup() -> 0
    Es2Cleanup: Cleanup ES2
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    ***LOG Q05=> DpHalt, DPStop ( 3892) [dpxxdisp.c   10333]
    Good Bye .....

    Hi Eric,
    Actually in my NSP_DVEBMS00_VEERU thePHYS_MEMSIZE  is set to 128
    So.....
    Do i need to change in the here below file.....:
    If yes wht shall i change it to ?
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    SAPGLOBALHOST = Veeru
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    zcsa/db_max_buftab = 500
    ztta/roll_area = 1000000
    ztta/diag_area = 128000
    ztta/dynpro_area = 150000
    ztta/cua_area = 250000
    rdisp/PG_SHM = 100
    rdisp/ROLL_SHM = 100
    rdisp/autoabaptime = 0
    rdisp/bufrefmode = sendoff,exeoff
    rdisp/wp_ca_blk_no = 20
    rdisp/appc_ca_blk_no = 20
    rdisp/max_wprun_time = 300
    icm/min_threads = 5
    icm/max_threads = 10
    icm/max_conn = 20
    icm/host_name_full = localhost
    mpi/total_size_MB = 10
    auth/new_buffering = 1
    sapgui/user_scripting = TRUE
    ssf/name = SAPSECULIB
    ssf/ssfapi_lib = $(DIR_CT_RUN)\sapsecu.dll
    sec/libsapsecu = $(DIR_CT_RUN)\sapsecu.dll
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    login/accept_sso2_ticket = 1
    login/ticket_only_to_host = 1
    rsdb/dbid = NSP
    dbs/ada/schema = SAPNSP

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    NI VirtualBench Application Software
    Get with your fellow hardware users :: [ NI's VirtualBench User Group ]
    Get with your fellow OS users :: [ NI's Linux User Group ] [ NI's OS X User Group ]
    Get with your fellow developers :: [ NI's DAQmx Base User Group ] [ NI's DDK User Group ]
    Senior Software Engineer :: Multifunction Instruments Applications Group
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    Revision: 11086
    Author:   [email protected]
    Date:     2009-10-22 11:42:17 -0700 (Thu, 22 Oct 2009)
    Log Message:
    Fixing Safari 4.x support for url change detection.
    QE notes: None
    Doc notes: None
    Bugs: SDK-22483
    Reviewer: Alex
    Tests run: Manual browser test.
    Is noteworthy for integration: No
    Ticket Links:
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    Carolyn
    Message was edited by: Carolyn Samit

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