New Server build / Hardware Error / Time Issue (DST)

Ok, i have several issues here i would like to have a bit of advice on or help.
1.)  i have an error that i've seen recently that seems to be at least a part of the reason my linux server is crashing.  
2.)  I am building a new server with an intel core2duo E6400 that i'll OC to 3.2 ghz.  
3.) Need info on correcting time issues with the new daylight savings time.

okay, starting with problem #1.  first off let me say that i think i could possibly have memory going bad or something on the mboard is bad because i have two sticks of memory Ultra pc2100 ddr 512megs a piece ..both exactly the same and i WAS using both in the system and it has been that way for years.  recently though since i began to have issues, they bios beeps at me like 3 times quick with both sticks of memory in the mboard.  just using one works fine however i still have some issues running the linux kernel because i see things in logs i wouldn't normally see...here is one in particular:

Mar 11 23:05:22 zeus kernel: Bad page state in process 'popper'  //this is the pop3 server qpopper
Mar 11 23:05:22 zeus kernel: page:c134f560 flags:0x80000004 mapping:00000070 mapcount:0 count:0
Mar 11 23:05:22 zeus kernel: Trying to fix it up, but a reboot is needed
Mar 11 23:05:22 zeus kernel: Backtrace:
Mar 11 23:05:22 zeus kernel:  [show_trace+21/32] show_trace+0x15/0x20
Mar 11 23:05:22 zeus kernel:  [<c01040d5>] show_trace+0x15/0x20
Mar 11 23:05:22 zeus kernel:  [dump_stack+23/32] dump_stack+0x17/0x20
Mar 11 23:05:22 zeus kernel:  [<c0104207>] dump_stack+0x17/0x20
Mar 11 23:05:22 zeus kernel:  [bad_page+72/128] bad_page+0x48/0x80
Mar 11 23:05:22 zeus kernel:  [<c013cbd8>] bad_page+0x48/0x80
Mar 11 23:05:27 zeus kernel:  [prep_new_page+118/128] prep_new_page+0x76/0x80
Mar 11 23:05:27 zeus kernel:  [<c013d056>] prep_new_page+0x76/0x80
Mar 11 23:05:27 zeus kernel:  [buffered_rmqueue+196/464] buffered_rmqueue+0xc4/0x1d0
Mar 11 23:05:27 zeus kernel:  [<c013d544>] buffered_rmqueue+0xc4/0x1d0
Mar 11 23:05:27 zeus kernel:  [get_page_from_freelist+180/224] get_page_from_freelist+0xb4/0xe0
Mar 11 23:05:27 zeus kernel:  [<c013d7b4>] get_page_from_freelist+0xb4/0xe0
Mar 11 23:05:27 zeus kernel:  [__alloc_pages+67/656] __alloc_pages+0x43/0x290
Mar 11 23:05:27 zeus kernel:  [<c013d823>] __alloc_pages+0x43/0x290
Mar 11 23:05:27 zeus kernel:  [generic_file_buffered_write+300/1472] generic_file_buffered_write+0x12c/0x5c0
Mar 11 23:05:27 zeus kernel:  [<c013af2c>] generic_file_buffered_write+0x12c/0x5c0
Mar 11 23:05:27 zeus kernel:  [__generic_file_aio_write_nolock+588/1152] __generic_file_aio_write_nolock+0x24c/0x480
Mar 11 23:05:27 zeus kernel:  [<c013b60c>] __generic_file_aio_write_nolock+0x24c/0x480
Mar 11 23:05:27 zeus kernel:  [generic_file_aio_write+108/240] generic_file_aio_write+0x6c/0xf0
Mar 11 23:05:27 zeus kernel:  [<c013ba8c>] generic_file_aio_write+0x6c/0xf0
Mar 11 23:05:27 zeus kernel:  [pg0+534552536/1069188096] ext3_file_write+0x28/0xa2 [ext3]
Mar 11 23:05:27 zeus kernel:  [<e021ffd8>] ext3_file_write+0x28/0xa2 [ext3]
Mar 11 23:05:27 zeus kernel:  [do_sync_write+171/256] do_sync_write+0xab/0x100
Mar 11 23:05:27 zeus kernel:  [<c015457b>] do_sync_write+0xab/0x100
Mar 11 23:05:27 zeus kernel:  [vfs_write+143/320] vfs_write+0x8f/0x140
Mar 11 23:05:27 zeus kernel:  [<c015465f>] vfs_write+0x8f/0x140
Mar 11 23:05:27 zeus kernel:  [sys_write+60/112] sys_write+0x3c/0x70
Mar 11 23:05:27 zeus kernel:  [<c01547bc>] sys_write+0x3c/0x70
Mar 11 23:05:27 zeus kernel:  [sysenter_past_esp+84/121] sysenter_past_esp+0x54/0x79
Mar 11 23:05:27 zeus kernel:  [<c0102ceb>] sysenter_past_esp+0x54/0x79

my question about this would be, is this something that looks like it could be caused by bad memory or something wrong with the mboard?   i don't know what bad page state means really.

Now, regarding #2.  
my motherboard:
Asus P5W DH Deluxe

memory: (2)
Module Name                                       Corsair CM2X512-5400C4
      Serial Number                                     None
      Module Size                                       512 MB (1 rank, 4 banks)
      Module Type                                       Unbuffered DIMM
      Memory Type                                       DDR2 SDRAM

Video:
nVIDIA GeForce 7300  
----
With this said, i was planning on installing Mandrake but i'm up for suggestion.  i run the Apache 1.3.34 or latest version.  basically the machine will have to primary functions...  Web server and Dns server and all i have to do is simply copy over my Bind config.  also i run mysql on the server and php 4.4.x on there.  i have an SSL key also i use on the web server.  is there a preferred stable linux "out of the box" distribution?  mandrake was just fine until this happened recently.

Lastly, this concerns TIME! : )  how can i test my machine to make sure the system is ok with the new daylight savings time revision?  what can i do to "redo" the time configuration on my linux server to make sure it's ok and that the bios hardware time gets set correctly by the OS each time it runs?

I appreciate the help!