>>I can not recall, but I believe there is a SYS() function that can be placed in the Watch window that will stifle the timer event.
>Sys(2030) maybe?

"Starting with Visual FoxPro 7, whenever user code directly runs a system component, such as _GENMENU or _BROWSER, certain debugging features (profiling, dohistory, breakpoints, and single step) are disabled. SYS(2030, 1) enables you to run debugger on this type of user code by disabling the default behavior, then re-enabling the behavior after debugging by issuing SYS(2030, 0). "

Not sure whether this applies to timers.