Airport Extrem not finding networks

I have an Ibook G4 with an airport extrem card. For about 6 months I used it with several public wirless networks , at university and cafes around town. One fine day, after not using it for about a month, it simply stopped finding networks. I turn it on via the menu at the top of the screen, but it simply does not find any network , not even ones that it used to connect to.
I made no changes in the configuration before it stopped working.
The Apple troubleshooting suggests that if you don't see a wireless network, try clicking Scan Again. I do not have this option, networks just appear in the menu once they are located.
In all these places ,the wirless if working for other people, siting next to me, so it is not a problem with the networks themselves.
Any ideas? should i take of the keyboard and check that the antena is located correctly?

ok , ill try it. Thanks.
Do you think I should also uninstall the software , or just start with removing the card and putting it back in place?
Or is there any thing else that needs doing?

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GG
Message was edited by: Gianguido
Message was edited by: Gianguido

I had the same problem with wireless TM backups loosing their connection to an AEBS-N running 7.4.2 with a 1.4TB Seagate FreeAgent airdisk. Restarting the cable modem and AEBS did not work. Reinstalling 10.5.7 did not work.
What did work was reverting to firmware 7.4.1 on the AEBS-N.
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{quote:title=Failed TM backup with AEBS-N running 7.4.2}{quote}
Starting standard backup
FSMountServerVolumeSync failed with error: -36 for url: afp://Leo%20Bley@Living%20Room%20AEBS%20N.afpovertcp.tcp.local/Leo%20Backup
Attempting mount using URL: afp://Leo%[email protected]/Leo%20Backup
FSMountServerVolumeSync failed with error: -36 for url: afp://Leo%[email protected]/Leo%20Backup
Backup failed with error: 19
Here is the TM Buddy log on the very next (successful) backup after the AEBS-N was rolled back to firmware 7.4.1:
{quote:title=Successful TM backup with AEBS-N running 7.4.1}{quote}
Starting standard backup
Mounted network destination using URL: afp://Leo%20Bley@Living%20Room%20AEBS%20N.afpovertcp.tcp.local/Leo%20Backup
Backup destination mounted at path: /Volumes/Leo Backup
Disk image /Volumes/Leo Backup/Leo's MacBook_002332b703ee.sparsebundle mounted at: /Volumes/Backup of Leo's MacBook
Backing up to: /Volumes/Backup of Leo's MacBook/Backups.backupdb
No pre-backup thinning needed: 100.0 MB requested (including padding), 504.38 GB available
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Waiting for index to be ready (905 > 0)
Bulk setting Spotlight attributes failed.
Copied 10264 files (7.7 MB) from volume Macintosh HD.
No pre-backup thinning needed: 613.3 MB requested (including padding), 504.38 GB available
Bulk setting Spotlight attributes failed.
Bulk setting Spotlight attributes failed.
Copied 21844 files (39.6 MB) from volume Macintosh HD.
Starting post-backup thinning
Found partially deleted backup - trying again to delete: 2009-06-04-084836
Deleted backup /Volumes/Backup of Leo's MacBook/Backups.backupdb/Leo's MacBook/2009-06-04-084836: 504.35 GB now available
Deleted backup /Volumes/Backup of Leo's MacBook/Backups.backupdb/Leo's MacBook/2009-06-03-025328: 504.35 GB now available
Post-back up thinning complete: 2 expired backups removed
Backup completed successfully.
Ejected Time Machine disk image.
Ejected Time Machine network volume.
Thanks everyone!

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