Just got an email from them . I don't think i exceed 5GB limitation .
Thank you for your e-mail of 24 January 2009 and kindly accept our
sincere apologies on the delayed response.
In response to your concern on the intermittent transfer rate of data
for 3G, Celcom can only control the performance of your connection
to the Internet. Once you access websites in the USA, Europe or even
across Asia, the speed you experience can be affected by the
performance of the Internet global links, web servers, high traffic
on a particular site or other factors outside the control of Celcom.
Similarly, please be informed that the speed obtained will be
depending on whether any throttling (upon usage reaching 5GB) has
been enforced on the account based on our Fair Usage Policy.
For your information, Mobile Broadband subscribers are bound by the
said policy in order to ensure that no individual dominates (hogs)
the bandwidth at all times and to ensure fairness to all other
customer on the same network. This is as indicated in the Addendum to
Celcom Mobile Sdn Bhd Customer Agreement Form (CAF) which says "This
addendum shall be read together with Celcom's CAF and terms and
conditions on the use of Celcom Broadband Service".
However, on the first day of the next billing cycle, the speed
reduction will be removed and the affected customers will enjoy their
subscribed speed again until they breach the 5GB data volume.
In clarifying your situation, our record unveils that your account
has been throttled on 18 January 2009, after exceeding the allocated
usage of 5 GB.
It is a pleasure serving you and we would like to take this
opportunity to thank you for your continued support and contribution
to Celcom.
Manage your account on line via Celcom Online Customer Service
https://wsc.celcom.com.my/webselfcare/login.aspx