There were no problems with the telephone calls, but problems with the internet surfing during my travel in Sahab. So here is my experience for your reference.

Mobile service providers in Malaysia
There are several mobile service providers in Malaysia, and general you can find the advertisements of Maxis, Celcom, Digi, U Mobile, Tune Talk in KK. I tried 2 SIM cards in Sabah, at first it's a Tune Talk card, later I replaced it with a Digi card.

Both Tune Talk and Digi have the WCDMA networks, so my HTC Desire was working fine with these two networks, "3G", "H"(HSDPA) icons were displayed in my phone.

Note:
Your passport is required to register the SIM card.

The prepaid SIM card for Malaysia with a world cell phone is the most convenient and economical solution for staying in touch while in Malaysia. All incoming calls while in Malaysia are FREE, regardless of where they originate.

Prices to buy the cards:
Tune Talk: RM 5.00 (1RM ~= 0.32 USD), with RM 2.00 available after activation
Digi: RM 8.50, with RM 5.00 available after activation.

IDD call rate:
Tune Talk: RM 0.16/min to USA
Digi: RM 0.18/min to USA

Internet：
Tune Talk: Thought "H"(HSDPA) was displayed in my phone, but actually it's too slow to open any web pages. SO, DON'T BUY THE TUNE TALK IF YOU NEED TO USE THE INTERNET.

Digi: It's much faster, the speed is about 50KB/s. To use its 3G internet service, it's strongly suggested to subscribe its weekly 250MB package at RM15.

Where to buy the SIM cards and Top up：
Tune Talk: You're able to buy Tune Talk cards when you're on the Air Asia's plane, and in the KK airport (don't be too late, the shop closes early). You can top up your card easily in 7-11s, the minimum top up amount is RM10.00

DiGi: You can buy DiGi cards and top up easily in many shops in KK, the minimum top up amount is RM5.00.

About WiFi:
I lived in 2 hotels in KK, both had free wifi, but unstable, and the speed was slow.

About smart phone internet sharing：
Many Android phones and iPhone can share the internet connections to others. With the DiGi card I shared the internet connections to my friends during my travel in Sabah.

I can just start the jetty, and simply put my static content into the /javadoc folder, and then it can be viewed through a browser.

But I encounter a problem that the URL is case sensitive. That means if the file is test.pdf, and I cannot find it via TEST.PDF, but I really need it.

After searching in goolge for a long time, I find that most of the articles about jetty aliases are out-dated, they are not suitable for jetty 7.

But finally, I found the answer from jetty 7's javadoc - ResourceHandler.setAliases(), and it redirected me to ContextHandler.isAliases()

Here is the update I made to make it work:
1. Open the javadoc.xml in the contexts folder
2. Add below line into the <Configure>:

<Set name="aliases">true</Set>

3. Start jetty

To install the driver of this card, we need to use "ndiswrapper" which makes the drivers for windows work in Ubuntu & it's GUI "ndisgtk" to facilitate the installation.

Here are the steps to install the driver for BCM4310 USB Controller Wireless Network Card in Ubuntu (have been tested in both 7.10 & 8.04)

1. Install "ndiswrapper" & "ndisgtk"
You can install the packages from command line with below command:
sudo apt-get install ndiswrapper-common ndiswrapper-utils ndisgtk
or you can install them from "Synaptic Package Manager"

2. Download the driver
Download the driver from Dell's site: http://ftp.us.dell.com/network/R174291.exe

3. Unzip the file
Unzip the file to your desktop, there should be a "DRIVER_US" folder which contains the "bcmwl5.inf" file, we need this file later

4. Run "ndisgtk"
command:
sudo ndisgtk
or you can launch it from "System -> Administration -> Windows Wireless Drivers"

5. Install the driver
Click "Install New Driver", and select the "bcmw5.inf" mentioned above, and then click "Install"

After the above 5 steps, the wireless card indicating lamp should be on now, if you still cannot connect to the network, you should make some configuration.

1. Open the Networking Admin tool (System | Administration | Networking), select the Wireless connection and click Properties, ensure the Enable roaming mode checkbox is ticked.
2. Click the Network Manager icon (computers icon in the top right corner of system tray), your network ESSID should be shown in the drop-down list. Select your network by clicking on it.
3. If the Network requires any further configuration (e.g. WEP key), a dialog should appear, select the correct settings and paste in your key.

2008-10-06 update:
For BCM4310 USB controller in Fedora Core 8, alexander has shared his experience here

And if you still have problems after applying the above steps, here, nadavkav has shared his experience on driving his BCM4310 (14e4:4315) on his HP Pavilion tx2520ej by compiling Broadcom's source.

Reference:
1. http://ubuntuforums.org/archive/index.php/t-650729.html
2. http://linux.dell.com/wiki/index.php/Tech/Wireless/Truemobile_ndiswrapper
3. http://ubuntuforums.org/showthread.php?t=650729

As you may know, the most famous mountains in Guangzhou are the Baiyun Mountain & the Yuexiu Mountain, which lie in almost the center of the city, their green trees, fresh air, histories and the convenient traffic have attracted quite a lot of tourists. But, they are not as natural as were, and they are crowded with people in holidays.

Huolu Mountain is different, it was not invested until about 5 years ago, but at present it still keeps most of its original appearance, only have some roads paved. To get to the peak of the mountain, you can choose to walk on the small roads or to climb a slope over 45 degrees which is a little dangerous. On the peak of the mountain, there are several huge stones, climb onto the stone then you will be able to take a glance of the city.

Walk along the roads, besides trees, flowers and insects, you may also find some people gathering water from springs in the mountain. Yes, there are still springs in the mountain, in the city of Guangzhou.

The problem I encountered was almost at the final step, that it showed the following error messages:

Transaction failed because has no funding sources (10210)
There was a problem authorizing your credit. Please verify your payment information or use an alternate form of payment.

I've searched the problem on the internet, and found that some people had the same problem with me. So I'm wondering whether GoDaddy supports PayPal or not at present.

05/Oct/2008 update: recently I've successfully renewed my domain with PayPal.