Mount partition in Ubuntu

My harddisk has 2 partitions (C and D). Ubuntu only recognised C drive.

I opened the terminal and run:
sudo fdisk -l

I can see the D drive in the output. So, I have to mount it to Ubuntu.

sudo mount /dev/sda4 /mnt

Now I can access the D Drive from mnt folder.

To unmount, run:
sudo unmount /mnt

Drupal 6 installation error (/includes/menu.inc on line 315)

When I installed Drupal 6, I got an error message about '/includes/menu.inc on line 315'. I can't find solution on the internet. So, what I did was deleting the database, create the new database, and start the installation again. This time, the installation was completed successfully. I didn't have any idea what caused the error previously.

Linksys VPN: remote gateway is not responding

I use QuickVPN to connect to the RV042 router in remote location. It worked perfectly for around a year. A few weeks ago, suddenly I can't connect anymore. The error message was 'Remote gateway is not responding'.

I didn't make any changes in both my laptop(Windows XP) and RV042. By the way, PPTP connection was allright. So, what's the problem?

I tried all these things..but it won't solve the problem:
- Turn off the firewall in XP.
- Turn off the firewall in RV042.
- Change MTU size in RV042.
- Add new VPN user.

I tried to install QuickVPN on another computer(same network)..and it didn't work..
I tried to install on a remote computer(XP)..and it works!

So, the problem was definitely on the client side. But I tried to turn off the firewall, anti virus..and still didn't work.

Then suddenly I was thinking about my router..Can it be my router that cause the problem? I opened the router's log and saw this line:
kernel: net/ipv4/netfilter/./broadcom/ip_nat_ipsec.c:ipsec_nat_help Out of table entries
I've no idea what's the meaning of it. But I had a feeling that something's wrong with the router. So, I restarted the router, then tried the QuickVPN..and problem SOLVED..Now QuickVPN is working..