new MBP running slow

[Gladius1]

Hello! i bought my mackbookpro on march this year, it is a 2.3Ghz i5 and 4 GB memory. And recently this week it started to give some problems: internet is running slow and safari is freezing frequently !!

Any suggestions?? please!

 

[simsaladimbamba]

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Have a look at Activity Monitor (Applications / Utilities /) and select All Processes and sort by CPU to see what the culprit may be.
Also check the "System Memory" tab to see what your "Page ins:", "Page outs:" and "Swap used:" are.

image below uses sorting by CPU as an example

Further reading:

Mac OS X: Reading system memory usage in Activity Monitor
Making The Most of Activity Monitor​

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[adrian1480]

have you added any plug-ins to Safari?

Also, install Chrome/Firefox/Opera and see if the internet continues to run slowly.