Hi Arphilyaw,
I do not personally have a SRW2024 but made my cousin buy one for his home. Personally upgrade my SRW2008P whenever software is made available. So I would encourage you to upgrade your code and reset to factory defaults (as a precaution).
After the upgrade, If your error log is not enabled, enable the error log on your system. see if this improves the situation.
Just out of interest, do you have other PC with different operating systems on the switch, like Win XP ?
Are these other PC affected by what you suggest " loss of internet (and to a lesser extent, LAN) connectivity" ?
If you are still having problems, check out the log to see if there is any pattern to the interfaces going up or down..
This is a good first step.
regards Dave