I don't know which Linksys AP you have, but if it's the WAP11, there
were a couple firmware releases which were truly crappy. They would
essentially lock up the access point so that nothing could associate
with it. A power cycle fixed the problem, but it would always return
within a few hours.

After a time, Linksys released a firmware version which corrected that
problem, but “broke” SNMP-based management of the AP. That was terrible
for me and many users because it meant that if I wanted to change any
settings on the WAP11, I'd have to take my laptop to the remote location
and attach directly to it with the USB cable. Due to the placement of my
WAP11, that was inconvenient, to say the least.

On January 15th, Linksys posted firmware version 1.41.1, which brings
SNMP management back while still fixing the “lockup” problem. It took
them over two full months to fix, but they finally did.
Be sure to grab the latest management software, too, since the older
version of the software doesn't support all the features provided by the
latest firmware versions. [Dave Beauvais]