Problem with 2GB memory card

Hello friends

I purchased Transcend 2 GB memory card for Nokia N72. That i inserted in mobile phone after that phone started working slow. then i remove 2 Gb card and inserted 512 mb card in phone then also it working slow can some one tell me whats the problem ?

Thanks.

There some software problem in your phone just format your phone from nokia gallery.

Download Nokia N72 update on your PC and then install it on your mobile phone.