F15 wifi suddenly stops working

[phoxo]

--- EDIT ---

Everything started working perfectly all of a sudden. No need for help

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Hello,

I know there's quite a few threads about wifi problems in F15 here, but none of the remedies suggested seem to work for me. Perhaps I've done something wrong, I'm quite new to Fedora.

My problem is that my wifi became really really slow all of a sudden last night. Today I've been trying to fix the problem, and right now wifi doesn't seem to work at all (pages load for a while but don't open). My wired connection is flawless.

This is what I've tried so far:

- set network.dns.disableIPv6 from "false" to "true" in Firefox
- added public DNS'es in IPv4 settings
- edited /etc/rc.local
- updated my kernel to 2.6.40
- disabled 801.11n mode

Here is what iwconfig gives me:

wlan0     IEEE 802.11bg  ESSID:"paellota"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 50:67:F0:CA:09:E0   
          Bit Rate=54 Mb/s   Tx-Power=15 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-29 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:11   Missed beacon:0

I'm using a Dell Inspiron N5110 (15R) with Intel Centrino Wireless-N 1030.

Very grateful for help.